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Terms of Use and Acknowledgement of Risk

Version 1.0, effective 27 August 2026

You must read this entire Agreement before creating an account or using DiveLogic.

DiveLogic produces decompression schedules, gas plans, gas-blending calculations and other diving-related outputs. Diving, particularly technical diving, can cause serious injury, permanent disability or death. Software can also be wrong.

By accepting this Agreement, you confirm that you have read and understood it and agree to be bound by it. If you do not agree, do not create an account and do not use the Software.

1. About us and this Agreement

1.1. These Terms of Use and Acknowledgement of Risk (the "Agreement") are a legally binding contract between you ("you", the "User") and DiveLogic Limited, a private limited company incorporated and registered in England and Wales with company number 16512942, whose registered office is at 86-90 Paul Street, London, England, EC2A 4NE ("DiveLogic", "we", "us", "our").

1.2. This Agreement permits two types of use:

  • personal Sport Diving use by appropriately trained and certified individual divers; and
  • Permitted Instructional Use by Qualified Instructors under clause 5.2.

It does not grant rights for broader commercial diving, occupational diving, dive-centre operations unrelated to instruction, public-safety operations, governmental operational use or Military Use.

1.3. This Agreement governs your access to and use of the DiveLogic desktop application, mobile application, web application, API and web services made available under your account, documentation, user handbook and related features, including dive planning, decompression calculation, gas planning, gas blending, dive-computer synchronisation, dive logging, post-dive review, plan sharing and AI features (together, the "Software").

1.4. When you use the Software wholly or mainly for your own personal Sport Diving, you are using it as a Consumer and the consumer protections described in this Agreement apply.

1.5. When a Qualified Instructor uses the Software in the course of providing paid or professional instruction, that instructional use is business use. Clauses expressly stated to apply to instructional or business use apply to that use.

1.6. Nothing in this Agreement excludes, restricts or overrides any right or remedy that cannot lawfully be excluded or restricted.

2. Definitions

In this Agreement:

  • "AI Features" means any feature using artificial intelligence, machine learning or a large language model, including conversational assistants, planning assistants, gas-blending assistants, routing assistants and post-dive analysis.
  • "Consumer" means an individual acting for purposes wholly or mainly outside that individual's trade, business, craft or profession.
  • "Decompression Schedule" means any ascent plan, stop schedule, ceiling, no-decompression limit, gradient-factor output or similar decompression output produced by the Software.
  • "Military End User" has the meaning given in clause 5.3.
  • "Military Use" has the meaning given in clause 5.3.
  • "Permitted Instructional Use" means use by a Qualified Instructor in connection with delivering diver training, including paid training, subject to clause 5.2.
  • "Qualified Instructor" means an instructor in active teaching status with a recognised diver training organisation, holding an instructor rating appropriate to the activity being taught and maintaining any insurance required by that organisation or applicable law.
  • "Research Feature" means a feature, model, algorithm or output that the Software identifies as beta, experimental, research, preview, prototype or otherwise not released for ordinary dive-planning use.
  • "Safety-Critical Output" means any Software output that could materially affect the safety of a dive if acted upon, including a Decompression Schedule, gas selection, gas quantity, bailout calculation, maximum operating depth, equivalent narcotic depth, oxygen-exposure calculation, scrubber estimate, gas-blending instruction or similar output.
  • "Sport Diving" means scuba or rebreather diving conducted for personal, non-occupational purposes, including appropriately trained technical sport diving.
  • "Technical Diving" means diving beyond ordinary recreational no-decompression limits or involving staged decompression, mixed gases, overhead environments, rebreathers or comparable technical procedures.

3. Eligibility

You may create an account and use the Software only if all of the following remain true:

3.1. You are at least 18 years old.

3.2. You are a certified diver and have training, certification and experience appropriate to every dive you personally plan or conduct using the Software.

3.3. If you use the Software for Technical Diving, mixed-gas diving, rebreather diving, gas blending or another specialist activity, you hold the training and certification appropriate to that activity.

3.4. If you make Permitted Instructional Use, you satisfy the definition of Qualified Instructor and comply with clause 5.2.

3.5. You have legal capacity to enter into this Agreement and your use of the Software is lawful where you are located.

If you cease to satisfy the relevant requirements, you must stop using the Software for the affected activity.

4. Licence and permitted use

4.1. Subject to this Agreement, DiveLogic grants you a personal, limited, non-exclusive, non-transferable licence to use the Software during the period in which you are entitled to access it.

4.2. You may use the Software for:

  • (a) planning, logging and reviewing your own Sport Dives;
  • (b) creating and discussing Sport Diving plans with your own dive team, buddy pair or recreational club group;
  • (c) sharing Sport Diving plans and exported outputs with other appropriately trained divers for the purpose of team planning; and
  • (d) if you are a Qualified Instructor, Permitted Instructional Use under clause 5.2.

4.3. A shared plan does not transfer responsibility from one diver to another. Every diver remains responsible for deciding whether a plan is appropriate for them and for conducting the checks required by their training.

4.4. All rights not expressly granted in this Agreement are reserved by DiveLogic and its licensors.

5. Instructional, commercial and military use

5.1 General commercial-use restriction

Except for Permitted Instructional Use under clause 5.2, this Agreement does not permit use of the Software in the course of a trade, business, profession, employment or paid diving operation.

Without limitation, you must not use the Software:

  • (a) for commercial diving, salvage, construction, inspection, aquaculture, occupational scientific diving, media-production diving or similar work;
  • (b) to plan or supervise guided dives, charters or dive-professional activities for paying customers outside Permitted Instructional Use;
  • (c) as part of the operational activities of a dive centre, liveaboard, charter business or commercial diving organisation except to the extent directly necessary for Permitted Instructional Use;
  • (d) to provide DiveLogic calculations, plans or outputs to others as a standalone paid planning service;
  • (e) to resell, sublicense, rent or commercially exploit access to the Software; or
  • (f) to integrate the Software or its outputs into another commercial product or service without our written agreement.

Any broader professional or commercial use requires a separate written agreement from DiveLogic.

5.2 Permitted Instructional Use

A Qualified Instructor may use the Software in connection with delivering diver training, including training provided for payment, provided that all of the following conditions are met:

  • (a) you remain in active teaching status and hold an instructor rating appropriate to the course, dive, equipment and gas being taught;
  • (b) you comply with all applicable standards, procedures, ratios, depth limits, prerequisites and supervision requirements of your training organisation and applicable law;
  • (c) where a training-organisation standard, manufacturer requirement, accepted emergency procedure or legal requirement conflicts with a Software output, the applicable external requirement prevails;
  • (d) you remain solely responsible for your instruction, supervision, student assessment, course conduct and decision whether a particular training dive should proceed;
  • (e) you independently verify every Safety-Critical Output used in an actual training dive before relying on it;
  • (f) you do not present the Software or any Software output as formally approved, certified, validated or endorsed by your training organisation unless that organisation has actually provided that approval;
  • (g) you explain to students, where relevant, that DiveLogic is a planning aid and does not replace their training, dive computer, gas analysis, contingency planning or personal judgment;
  • (h) a student does not need a DiveLogic account merely because you show them or provide them with a plan as part of instruction, but any student who directly accesses or operates the Software must use their own authorised account and accept the applicable DiveLogic terms;
  • (i) you maintain any professional or instructional insurance required by your training organisation or applicable law; and
  • (j) you do not use Permitted Instructional Use as a means of providing broader commercial, occupational, military or public-safety planning services.

Permitted Instructional Use does not make DiveLogic your training agency, co-instructor, dive supervisor or partner. DiveLogic does not supervise your course and does not certify your students.

5.3 Military, defence and tactical-use prohibition

This Agreement grants no military, defence, intelligence, tactical or operational public-safety rights.

For this clause:

  • "Military End User" means any armed force or military service, special operations or special warfare unit, ministry or department of defence, intelligence or security agency, defence contractor or subcontractor acting in that capacity, paramilitary organisation, or law-enforcement or public-safety diving unit performing tactical or operational duties.
  • "Military Use" means use of the Software or its outputs by, for, on behalf of, at the direction of, in support of, or for the ultimate benefit of a Military End User. It includes operations, mission planning, rehearsal, training, exercises, doctrine or procedure development, research, testing, evaluation, procurement assessment, demonstrations and integration into another military, defence or tactical system or planning process.

No account registration, consumer subscription, instructor use, free account, trial, promotional access or acceptance of this Agreement authorises Military Use.

Military Use is permitted only under a separate written Military Evaluation Agreement, Military Licence Agreement or other military agreement expressly issued by DiveLogic and signed by authorised representatives of the relevant parties. Any such agreement may be subject to export-control, sanctions, security, end-user and procurement requirements.

If you are a member, contractor or employee of a Military End User, you may use DiveLogic under this Agreement for your own personal Sport Diving, or in a genuinely civilian instructional capacity unrelated to that Military End User, only where that use is wholly unconnected with your military, defence, intelligence, tactical, procurement or operational duties.

Unauthorised Military Use is a serious breach of this Agreement and may result in immediate suspension or termination.

5.4 Other prohibited use

You must not:

  • (a) present the Software or any output as an official, medically approved, guaranteed-safe or certified decompression table, operational procedure or agency standard unless that representation has actually been authorised;
  • (b) remove, conceal, disable or bypass safety warnings, account controls, access controls or usage restrictions;
  • (c) use another person's account or allow another person to use your account;
  • (d) use the Software to facilitate unlawful activity;
  • (e) deliberately introduce malware, interfere with the Software or attempt unauthorised access to our systems;
  • (f) scrape, bulk-extract or systematically copy the Software, its databases or proprietary content except where law expressly gives you that right;
  • (g) reverse engineer, decompile or disassemble proprietary parts of the Software except to the limited extent that applicable law gives you a non-excludable right to do so; or
  • (h) use the Software in a manner materially outside the uses authorised by this Agreement.

6. Paid subscriptions, billing and cancellation

6.1 Paid plans

Some Software features may require a paid subscription. The price, billing period, included features and any mandatory charges will be shown before you purchase.

A subscription may permit both personal Sport Diving and Permitted Instructional Use where you otherwise meet the requirements of this Agreement.

6.2 Automatic renewal

If you choose an automatically renewing subscription, it will renew for the period disclosed at purchase unless you cancel before the next renewal takes effect.

You may switch off automatic renewal or cancel future renewals using the cancellation method made available for your subscription. We will not require an unnecessarily difficult or disproportionate cancellation process.

6.3 Effect of ordinary cancellation

Unless applicable law or the terms shown at purchase give you a greater right:

  • (a) cancelling stops future renewals;
  • (b) you may continue using the paid features until the end of the period you have already paid for; and
  • (c) we do not provide a partial refund merely because you choose not to use the remainder of a paid period.

This does not affect any right to a refund arising because the Software is faulty, misdescribed, not supplied as agreed, materially changed in a way that gives you a legal remedy, or otherwise covered by a non-excludable right.

6.4 Cooling-off and statutory cancellation rights

Where applicable consumer law gives you a cooling-off or cancellation right in relation to a purchase made as a Consumer, we will honour it.

For digital content supplied immediately, the law may allow the cooling-off right to end after supply begins only where the required express consent and acknowledgement have been obtained. Any such consent or acknowledgement will be requested separately where required.

6.5 Free trials and introductory offers

If a free trial or reduced-price period will convert automatically into a paid subscription, we will disclose the applicable price, timing and renewal basis before you sign up.

6.6 Price changes

We may change the price of a future subscription period for legitimate commercial reasons.

A price change will not retrospectively increase the price of a period you have already paid for. Where required by law, or where a change is material, we will give clear advance notice and an opportunity to cancel before the new price applies.

6.7 App stores and payment providers

If you purchase through Apple, Google or another third-party marketplace or payment provider, that provider may administer payment, renewal, cancellation or refunds. Its purchase terms may apply in addition to this Agreement, but they do not remove rights that applicable law does not permit to be removed.

6.8 Future subscription-law requirements

If new mandatory subscription rules become applicable to a Consumer subscription, including requirements concerning reminders, renewal cooling-off periods, cancellation methods or refunds, those rules apply whether or not this Agreement has yet been updated to repeat them.

7. DiveLogic is a planning tool, not a guarantee of safety

7.1 What the Software does

DiveLogic is a calculation, planning, logging and educational aid for trained divers and Qualified Instructors. It is not a dive supervisor, dive computer, medical service, certifying body or substitute for competent diving judgment.

7.2 Software can be wrong

Do not assume that a Software output is correct merely because it is presented confidently, precisely or numerically.

A Safety-Critical Output may be wrong because of, among other things:

  • software defects;
  • implementation errors;
  • model limitations;
  • incorrect assumptions;
  • incorrect or incomplete data entered by a user;
  • corrupted or incomplete imported data;
  • hardware or synchronisation errors;
  • outdated cached information;
  • incorrect settings; or
  • problems that neither you nor DiveLogic has yet identified.

Any Safety-Critical Output intended for use on an actual dive must be independently checked before reliance.

7.3 Decompression models are not guarantees

Decompression models are mathematical models of physiological risk. They are not physical laws and they do not know an individual diver's physiology.

Decompression sickness and other injuries can occur even where:

  • a plan has been calculated correctly;
  • a diver follows the plan exactly;
  • a profile appears conservative; and
  • no obvious predisposing factor is present.

No Decompression Schedule or conservatism setting can guarantee that decompression sickness, oxygen toxicity, inert-gas narcosis, isobaric counterdiffusion injury or another diving injury will not occur.

7.4 Gas planning and blending

High-pressure gas handling, oxygen-enriched gases and mixed-gas blending can cause fire, explosion, hypoxia, hyperoxia, narcosis, equipment damage, serious injury or death if performed incorrectly.

You must not act on gas-blending outputs unless appropriately trained.

Regardless of any target mix produced by the Software, breathing gas must be analysed and labelled using appropriate calibrated equipment before use.

7.5 Dive-computer data and post-dive information

Imported dive-computer data may be incomplete, corrupted, delayed, incorrectly interpreted or incompatible.

Dive logs, plan-versus-actual comparisons, risk indicators and post-dive analyses are informational tools. They are not medical diagnoses or fitness-to-dive assessments.

7.6 Keep the actual plan you intend to dive

Software versions, model implementations, defaults or settings may change over time, so the same inputs may not always produce the same output after an update.

Before a dive, verify that the plan in front of you is the current plan intended for that dive, with the intended gases, settings, depth, time, model and conservatism parameters.

Do not rely on being able to retrieve a safety-critical plan from our servers during a dive or emergency.

8. The Software does not replace training, medical advice or emergency services

8.1. The Software assumes that its users already have the training, certification, skills and experience required for the activities they undertake.

8.2. The fact that DiveLogic can calculate a plan for a particular depth, duration, gas, rebreather or environment does not mean a person is trained, competent, medically fit or otherwise suitable to conduct that dive.

8.3. Individual divers must not use DiveLogic as a substitute for formal training in procedures for which formal training is normally required.

8.4. Qualified Instructors may use DiveLogic as a teaching and planning aid under clause 5.2, but DiveLogic does not replace their training organisation's standards, course materials, professional judgment or supervision duties.

8.5. Nothing in the Software is medical advice. DiveLogic does not determine whether a person is medically fit to dive.

8.6. If decompression sickness, arterial gas embolism, oxygen toxicity, carbon-monoxide exposure, serious barotrauma, drowning injury or another diving emergency is suspected, seek emergency and diving-medicine assistance immediately. Do not delay treatment while consulting DiveLogic or an AI Feature.

9. AI Features and Research Features

9.1 AI Features can hallucinate and make mistakes

AI Features can produce false statements, incorrect calculations, invented facts, inappropriate recommendations and inconsistent answers. A confident or authoritative writing style is not evidence that an AI response is correct.

9.2 AI output is not a safety authority

Every AI output is an unverified suggestion or explanation.

You must not use an AI Feature as:

  • the sole source for a Safety-Critical Output;
  • a substitute for the Software's deterministic calculation tools;
  • an instructor, supervisor, medical professional or certifying authority; or
  • the final authority for a decision about whether or how to conduct a dive.

Where an AI Feature conflicts with a deterministic Software calculation, formal training standards, a dive computer, established procedure or another reliable source, investigate the conflict rather than choosing the answer you prefer.

9.3 Instructor responsibility for AI use

A Qualified Instructor who uses an AI Feature in teaching remains responsible for reviewing what is shown or communicated to students.

AI-generated explanations, examples, plans and calculations must not be presented as verified agency material unless they have been independently checked and are consistent with the applicable course standards.

9.4 Research Features

A Research Feature is provided for evaluation, education or research unless the Software expressly states that it has been released for ordinary dive-planning use.

Do not use a Research Feature as the sole basis for a real dive plan or other Safety-Critical Output.

The availability of a model or algorithm inside DiveLogic does not itself mean that DiveLogic represents it as clinically validated, operationally validated or suitable for any particular person's physiology.

10. Safety responsibilities

10.1 All users

Whenever you use the Software in connection with diving, you agree that you will:

  • remain within the training, certification, competence and experience applicable to your role;
  • independently verify every Safety-Critical Output intended for actual use;
  • understand and check the model, gradient factors or other conservatism settings selected;
  • analyse and label breathing gas as required by proper diving practice;
  • use appropriate independent equipment for monitoring depth, time, breathing gas and decompression obligation;
  • enter accurate data and check imported data before relying on it;
  • take account of conditions that software cannot reliably determine, including health, fatigue, thermal stress, exertion, hydration, workload, equipment condition, environment and team capability;
  • apply conservative judgment and established training;
  • maintain appropriate contingency, lost-gas, bailout and emergency planning; and
  • never treat access to DiveLogic, internet connectivity or retrieval of a cloud-stored plan as an underwater safety dependency.

10.2 Independent verification for actual dives

For any Decompression Schedule or gas plan intended to be used for an actual dive, perform at least one independent check appropriate to the circumstances.

An independent check may include comparison with:

  • an independent planning system;
  • suitable decompression tables;
  • a manual calculation;
  • a suitably configured independent dive computer; or
  • competent review by an appropriately qualified diver or instructor.

The purpose of the independent check is to detect unreasonable or inconsistent output, not merely to reproduce the same assumptions without review.

10.3 Additional responsibilities of Qualified Instructors

When making Permitted Instructional Use, a Qualified Instructor must additionally:

  • independently review every plan used for a training dive;
  • ensure that students are briefed on the actual plan and contingencies appropriate to the course;
  • confirm gases, equipment, supervision arrangements and environmental conditions;
  • ensure that use of DiveLogic is consistent with applicable training standards;
  • retain final instructional and supervisory judgment; and
  • terminate, modify or decline a training dive where conditions, a student's performance, equipment or safety considerations require it.

11. Acknowledgement of inherent diving risk

11.1. You acknowledge that scuba diving and Technical Diving are hazardous activities.

11.2. Risks include, without limitation, decompression sickness, arterial gas embolism, oxygen toxicity, hypoxia, hypercapnia, inert-gas narcosis, isobaric counterdiffusion, drowning, barotrauma, hypothermia, entanglement, entrapment, fire, explosion, equipment failure and death.

11.3. These risks can exist even where equipment functions correctly, the Software performs as intended and a dive is conducted according to plan.

11.4. You also acknowledge that using planning software introduces additional risks, including software defects, model limitations, bad inputs, synchronisation problems, stale data and misunderstanding of outputs.

11.5. Each diver remains responsible for deciding whether to conduct a dive and for decisions made during that dive, subject in training to the instructor's separate professional supervision responsibilities.

11.6. This acknowledgement records inherent risks voluntarily accepted by the relevant diver. It does not exclude or reduce any liability that DiveLogic cannot lawfully exclude or reduce.

12. Consumer rights

12.1 When this clause applies

This clause applies when you use or purchase the Software as a Consumer for personal Sport Diving.

It does not apply to the extent a Qualified Instructor is using the Software in the course of their trade, business or profession.

12.2 Mandatory consumer rights remain

Applicable law gives Consumers rights concerning digital content and services. In the United Kingdom these include rights under the Consumer Rights Act 2015 and other consumer legislation.

Nothing in this Agreement excludes, restricts or replaces a Consumer right or remedy that the law says cannot be excluded or restricted.

12.3 Description, quality and fitness for purpose

Where consumer law requires the Software to be of satisfactory quality, fit for a purpose made known to us, match its description or meet another mandatory standard, those obligations apply.

The safety warnings in this Agreement explain the inherent limits of dive-planning software and decompression science. They do not give us permission to supply defective or misdescribed software.

12.4 Remedies

If the Software is faulty, misdescribed or otherwise fails to meet a mandatory consumer standard, you may have rights to repair, replacement, a price reduction, refund or other remedy depending on the circumstances and applicable law.

12.5 Consumers outside the United Kingdom

If mandatory consumer laws in the country where you live apply to your use or purchase of the Software, this Agreement does not deprive you of protections that those laws do not allow you to waive.

13. Liability

13.1 Liability we do not exclude or limit

Nothing in this Agreement excludes or limits our liability for:

  • (a) death or personal injury caused by our negligence;
  • (b) fraud or fraudulent misrepresentation;
  • (c) breach of a statutory consumer right to the extent liability cannot lawfully be excluded or limited; or
  • (d) any other liability that applicable law does not permit us to exclude or limit.

13.2 Consumer loss caused by our breach

Where you use the Software as a Consumer, if we fail to comply with this Agreement or fail to use reasonable care and skill, we are responsible for loss or damage you suffer that is a foreseeable result of that failure, subject to applicable law.

Loss or damage is foreseeable if it was an obvious consequence of our failure or was contemplated by both you and us when the relevant contract was made.

13.3 Loss not caused by DiveLogic

Subject to clause 13.1 and any applicable statutory rights, we are not responsible for loss or injury to the extent it is caused by something for which we are not legally responsible, including:

  • inaccurate, incomplete or misleading information entered or confirmed by a user;
  • use of a plan with different gases, depth, time, equipment, model or settings from those on which it was calculated;
  • failure to perform the independent checks required by this Agreement;
  • use beyond the relevant person's training, certification or competence;
  • failure to analyse breathing gas or use appropriate maintained equipment;
  • reliance on stale, cached, corrupted or obviously inconsistent information without checking it;
  • a decision to ignore a warning, abort criterion, more conservative independent result or established emergency procedure;
  • an inherent risk of diving that would have occurred even if the Software had performed correctly; or
  • use of the Software for a purpose prohibited by this Agreement.

Nothing in this clause excuses DiveLogic from responsibility where our own breach, negligence or other legal responsibility caused or materially contributed to the loss.

13.4 Third-party systems

We are not responsible for the independent operation of third-party dive computers, operating systems, app stores, communications networks, hardware or services that we do not control.

This does not exclude responsibility where a loss was caused by our own failure to use reasonable care and skill in a feature or integration that we provide.

13.5 Business and instructional losses

When you make Permitted Instructional Use, you are acting in the course of a business or profession.

Subject to clause 13.1 and to the extent permitted by law, DiveLogic is not liable for:

  • loss of profit;
  • loss of revenue;
  • loss of business;
  • loss of anticipated savings;
  • loss of goodwill;
  • loss of contracts;
  • business interruption; or
  • indirect or consequential business loss.

13.6 Liability cap for Permitted Instructional Use

Subject to clause 13.1 and to the extent permitted by law, DiveLogic's total aggregate liability arising from your Permitted Instructional Use in any 12-month period shall not exceed the greater of:

  • the total fees paid by you to DiveLogic for the Software during that 12-month period; and
  • GBP 10,000.

This cap applies only to business/instructional use. It does not cap any Consumer remedy that applicable consumer law requires to remain available.

13.7 Instructor responsibility for instruction

DiveLogic is not a party to your relationship with your students.

You remain responsible for your own acts and omissions as an instructor, including supervision, course conduct, compliance with training standards and decisions about student progression.

Nothing in this clause makes you responsible for a loss to the extent that loss was caused by DiveLogic's own negligence, breach of contract or other legal responsibility.

13.8 Claims caused by an instructor's breach

To the extent permitted by law, a Qualified Instructor making Permitted Instructional Use is responsible for reasonable losses, liabilities and legal costs incurred by DiveLogic as a direct and foreseeable result of:

  • the instructor's material breach of clause 5.2;
  • the instructor's fraudulent or unlawful use of the Software; or
  • a third-party claim arising directly from the instructor falsely representing DiveLogic as having approved, certified or supervised the instructor's course.

This clause does not require an instructor to indemnify DiveLogic for DiveLogic's own negligence, breach or wrongdoing.

14. Accounts, user data and privacy

14.1. You are responsible for keeping your login credentials secure and for activity carried out through your account where that activity results from your failure to take reasonable security precautions.

14.2. Tell us promptly if you reasonably believe your account has been compromised.

14.3. You retain your rights in personal dive logs, notes, plans, messages and other material that you submit to the Software ("User Content"), subject to any rights belonging to third parties.

14.4. You give DiveLogic a limited right to host, copy, process, transmit, display and otherwise use User Content only as reasonably necessary to operate, secure, support and improve the Software, comply with law, and provide features you request. Our use of personal data is also governed by our Privacy Policy and applicable data-protection law.

14.5. Instructors must not upload student personal data to DiveLogic unless they have a lawful basis to do so and comply with applicable data-protection obligations.

14.6. We may store plans, logs, chats, settings and related information to provide synchronisation and account features. Unless applicable law requires otherwise, cloud storage is not a guaranteed archival or emergency-backup service.

14.7. Keep independent copies of records that matter to you. Never depend on our servers being available when a dive plan is safety-critical.

15. Availability, updates and changes to the Software

15.1 Availability

We aim to keep the Software available and functioning but do not promise uninterrupted availability.

Planned maintenance, security incidents, internet failures, third-party outages, emergency repairs and events outside our reasonable control may interrupt access.

Where a prolonged failure of a paid Consumer service gives you a statutory remedy, this clause does not remove that remedy.

15.2 Why we may change the Software

We may update or change the Software for legitimate reasons, including:

  • correcting defects or calculation errors;
  • improving safety;
  • responding to scientific or technical developments;
  • improving functionality or usability;
  • maintaining compatibility with operating systems, devices or third-party services;
  • responding to security threats;
  • complying with law, regulation or legal process;
  • replacing or modifying third-party technology on which a feature depends; or
  • retiring a feature that can no longer reasonably be supported.

15.3 Safety and security changes

Where we reasonably consider a change necessary to correct a safety issue, security issue, serious defect or legal compliance problem, we may make the change immediately.

Where practicable, we will explain material safety-related changes through release notes, in-product notices or another appropriate channel.

15.4 Material adverse changes to paid Consumer features

We will not use a general right to change the Software as a basis for arbitrarily removing the main benefit of a paid Consumer subscription.

If we make a material adverse change to a paid Consumer feature during a period already paid for, we will provide any notice, cancellation option, refund, price reduction or other remedy required by applicable law.

15.5 Different versions may produce different plans

A plan generated before an update may differ from a plan generated afterwards.

Before relying on a plan, check the model, gases, inputs, settings and version information shown by the Software where available, and perform the independent verification required by clause 10.

15.6 Discontinuing a paid service

If we permanently discontinue the paid Software during a prepaid Consumer period for reasons other than your breach, we will provide an appropriate remedy for the unused portion of that period where required by law.

16. Suspension, cancellation and termination

16.1. You may stop using the Software at any time. Cancelling a paid subscription is governed by clause 6.

16.2. We may suspend or restrict an account where reasonably necessary to:

  • investigate or prevent fraud, abuse or unauthorised access;
  • protect users, DiveLogic or third parties from a safety or security risk;
  • comply with law or a binding legal requirement; or
  • investigate a suspected material breach of this Agreement.

16.3. We may terminate your licence for a material breach of this Agreement.

Where the breach is capable of being corrected and immediate action is not reasonably necessary for safety, security or legal reasons, we will normally give you a reasonable opportunity to correct it.

16.4. We may suspend or terminate immediately for serious misconduct, including deliberate unauthorised Military Use, fraud, malicious interference with our systems or use that creates a serious safety or security risk.

16.5. If we terminate a prepaid Consumer subscription for reasons unrelated to your breach, we will provide an appropriate remedy for the unused paid period where required by law.

16.6. Termination does not remove rights, remedies or obligations that accrued before termination. Clauses that by their nature are intended to continue, including clauses 5, 11, 12, 13, 17 and 18, continue to apply as appropriate.

17. Intellectual property

17.1. DiveLogic and its licensors own the Software and all intellectual-property rights in it, except for User Content and third-party or open-source material owned by others.

17.2. This Agreement gives you a right to use the Software. It does not transfer ownership of the Software, source code, proprietary algorithms, branding, databases or other intellectual property to you.

17.3. You may use plans and exports produced through your account for the purposes permitted by this Agreement, including Permitted Instructional Use.

17.4. Open-source components remain subject to their applicable open-source licences. Where an open-source licence gives you rights that conflict with a restriction in this Agreement, the open-source licence governs that component to the extent of the conflict.

18. General terms

18.1 Changes to this Agreement

We may update this Agreement where reasonably necessary because of changes to the Software, law, regulation, security requirements or our business model.

If a change materially affects the rights or obligations of a Consumer, we will provide reasonable notice where practicable and, where required by law, obtain agreement or give a right to cancel.

For business or instructional use, continued use after reasonable notice of an updated Agreement constitutes acceptance to the extent permitted by law.

18.2 Notices

We may provide contractual or service notices through the Software, by email to the address associated with your account, or through another contact method you have provided.

You are responsible for keeping your account contact details reasonably current.

18.3 Governing law and courts

This Agreement is governed by the law of England and Wales.

If you are a Consumer resident in another part of the United Kingdom or another country, this choice of law does not deprive you of mandatory consumer protections that apply to you.

Nothing in this clause prevents a Consumer from bringing proceedings in a court that applicable consumer law entitles them to use.

For Permitted Instructional Use, you and DiveLogic submit to the jurisdiction of the courts of England and Wales, subject to any mandatory rule that applies.

18.4 Severability

Each clause operates separately. If a court or competent authority finds a clause unlawful or unenforceable, the remaining clauses continue to apply. Any affected clause applies only to the maximum extent lawfully permitted.

18.5 No waiver

If either party delays enforcing a right, that does not automatically mean the right has been waived.

18.6 Transfer of this Agreement

You may not transfer your account or this Agreement to another person without our consent.

We may transfer our rights and obligations as part of a reorganisation, financing, merger, acquisition, sale of business or similar transaction, provided that the transfer does not reduce any mandatory Consumer rights.

18.7 Third-party rights

Except where expressly stated, this Agreement does not give a third party a right to enforce it under the Contracts (Rights of Third Parties) Act 1999.

18.8 Entire agreement and pre-contract information

This Agreement, the information shown to you at purchase, our Privacy Policy where relevant, and any other information that applicable law requires to form part of the contract together govern your use or purchase of the Software.

Nothing in this clause excludes responsibility for fraud, fraudulent misrepresentation, or any description, statement or pre-contract information that applicable law makes binding.

18.9 Complaints and contact

Questions, complaints and support requests should be sent through the support contact details provided in the Software or on the DiveLogic website.

Military licensing enquiries must be made separately at military@divelogic.ai. Sending an enquiry does not itself grant any Military Use rights.

19. Your acknowledgement

By ticking the acceptance box and creating an account, you confirm personally that:

  1. I have read and understood this entire Agreement.
  2. I am at least 18 years old and a certified diver, and I will use DiveLogic only within the training, certification, competence and experience applicable to my role.
  3. I understand that diving, especially Technical Diving, can cause serious injury or death even when a plan is calculated and followed correctly.
  4. I understand that DiveLogic can be wrong, including its Decompression Schedules, gas calculations and other Safety-Critical Outputs.
  5. I will independently verify every Safety-Critical Output before relying on it for an actual dive.
  6. I understand that AI Features can hallucinate or make incorrect recommendations and will not treat an AI output as an instructor, supervisor, medical professional or final safety authority.
  7. I will ensure breathing gas is analysed and labelled and will use appropriate independent diving equipment and contingency planning.
  8. If I am using DiveLogic as an individual diver, I will use it only for permitted Sport Diving.
  9. If I am a Qualified Instructor, I may use DiveLogic for Permitted Instructional Use, but I remain responsible for my instruction, supervision, compliance with training standards and independent verification of plans used with students.
  10. I will not use this Agreement for broader commercial, occupational or paid diving operations outside Permitted Instructional Use.
  11. I will not use this Agreement for Military Use. I understand that military, defence, intelligence, tactical and operational public-safety use requires a separate written agreement issued by DiveLogic.
  12. I understand that DiveLogic does not replace formal training, medical advice, emergency services, training-organisation standards or competent diving judgment.
  13. I accept the inherent risks of diving described in clause 11, while retaining every right and legal remedy that cannot lawfully be excluded or restricted.

If you cannot truthfully confirm these statements, do not accept this Agreement and do not use the Software.

DiveLogic Limited, registered in England and Wales, company number 16512942. Registered office: 86-90 Paul Street, London, England, EC2A 4NE. DiveLogic Terms of Use and Acknowledgement of Risk, Version 1.0, effective 27 August 2026.