Rift

Terms of Service

Last updated · May 24, 2026

1. Agreement to these terms

These Terms of Service ("Terms") govern your access to and use of the Rift mobile app, the website at riftendurance.com, and the web app at app.riftendurance.com (together, the "Service"), operated by Rift Endurance LLC, a Delaware limited liability company ("Rift," "we," "us," or "our").

By creating an account, downloading the app, or otherwise using the Service, you agree to be bound by these Terms and our Privacy Policy. If you do not agree, do not use the Service.

If you are using the Service on behalf of an organization, you represent that you have authority to bind that organization to these Terms.

2. The Service

Rift is a software service that generates personalized triathlon training plans for self-coached athletes. The Service uses algorithms and AI to calibrate workouts based on your input (race goals, training history, fitness data) and data imported from connected services (Strava, Apple HealthKit, Apple Watch, and future integrations). The Service may include features such as plan generation, workout tracking, in-app coaching responses, training analytics, and integrations with third-party platforms.

The Service is provided "as is" and we may add, change, or remove features at any time. We support iOS only at this time.

3. Eligibility

To use the Service you must be at least 16 years old (or the minimum age of consent in your jurisdiction, whichever is higher). If you are between 16 and the age of majority in your jurisdiction, you may only use the Service with the involvement of a parent or guardian who agrees to these Terms.

You must be physically capable of performing the activities the Service prescribes. If you are unsure, consult a physician before using the Service (see §10).

4. Your account

4.1 Account creation

You must create an account to use the Service. You agree to provide accurate, current, and complete information during registration, and to keep it up to date. You are responsible for safeguarding your account credentials. You agree to notify us immediately at app@riftendurance.com of any unauthorized access or breach.

4.2 One account per person

Each account is for one person. Do not share your credentials or create accounts on behalf of others without authorization.

4.3 You can delete at any time

You may delete your account from inside the iOS app under Settings → Account → Delete Account, or by emailing app@riftendurance.com. Deletion is described in our Privacy Policy §7.

5. Beta program

The Service is currently offered as a free TestFlight beta. By participating in the beta:

• You acknowledge that the Service is pre-release software and may contain bugs, errors, incomplete features, or inaccurate data
• You will not publicly disclose confidential information about unreleased features without our permission
• You agree to provide feedback honestly and constructively, which we may use to improve the Service without compensation to you
• We may modify, suspend, or discontinue the beta at any time without prior notice
• "Founding Member" benefits (such as locked-in discounted pricing) will be honored when paid subscriptions launch, subject to the terms communicated at the time of your enrollment

6. Subscriptions and payments (future)

The Service will introduce paid subscriptions in the future. At that time, these additional terms will apply:

• Subscription pricing and billing cycle will be disclosed at the point of purchase
• Payments will be processed by a third-party processor (such as Stripe or Apple's In-App Purchase system); your relationship with the processor is governed by their terms
• Subscriptions auto-renew unless cancelled before the renewal date; you can cancel anytime via your App Store account settings or in-app
• Refunds are at our discretion except where required by law. For Apple In-App Purchases, refund requests must be submitted to Apple directly
• Founding Members who locked in a discounted rate during beta will retain that rate as long as their subscription remains active and uninterrupted

7. Acceptable use

You agree to use the Service only for lawful purposes and in accordance with these Terms. You will not:

• Reverse engineer, decompile, disassemble, or attempt to derive source code of the Service except where permitted by applicable law
• Bypass, disable, or interfere with security or rate-limiting features
• Use the Service to send spam, harass other users, or transmit malware
• Scrape, crawl, or systematically extract data from the Service except via our official APIs (if any)
• Impersonate any person or entity, or misrepresent your affiliation with any person or entity
• Use the Service to compete with us by training a competing AI model on our outputs, or to build a substantially similar product
• Use the Service to violate any applicable law, regulation, or third-party right (including intellectual property and privacy rights)
• Use the Service in connection with any activity that endangers life, health, or property

We may suspend or terminate your access for violations of this section.

8. Your content and training data

8.1 You own your data

You retain all rights, title, and interest in and to the workout data, profile data, notes, photos, and other content you create or upload to the Service ("User Content").

8.2 License to operate the Service

You grant Rift a worldwide, non-exclusive, royalty-free license to host, store, process, transmit, display, and create derivative works from your User Content solely for the purpose of providing and improving the Service (for example, sending workout metadata to our AI provider to generate plan content, or computing aggregated and anonymized analytics).

8.3 Feedback

If you send us feedback, suggestions, or ideas, you grant us an unrestricted, perpetual, royalty-free, worldwide license to use that feedback without compensation or attribution to you.

8.4 Anonymized data

We may use de-identified, aggregated data derived from User Content (data that cannot reasonably be linked back to you) for research, product improvement, and benchmarking, including after your account is deleted.

9. Our content and intellectual property

The Service, including all software, designs, text, graphics, plan-generation algorithms, AI-generated training content, and trademarks, is owned by Rift or our licensors and is protected by intellectual property laws. We grant you a limited, non-exclusive, non-transferable, revocable license to use the Service for your personal, non-commercial use, subject to these Terms.

You may not reproduce, modify, distribute, sell, lease, or create derivative works of the Service, or remove any copyright or proprietary notices, except as expressly permitted by us in writing.

The names "Rift," "Rift Endurance," and our logos are trademarks of Rift Endurance LLC. You may not use them without our prior written permission.

10. Health and safety — important medical disclaimer

By using the Service you acknowledge and agree that:

• You should consult a physician before starting any new exercise program, especially if you have any pre-existing medical condition, are pregnant, are recovering from injury or surgery, take medication that affects heart rate or hydration, or are over the age of 35 and have been sedentary
• Endurance training carries inherent risk of injury, illness, dehydration, hyponatremia, heat illness, cardiac events, drowning, traffic accidents, and other serious harm including death
• You assume all risk of using the Service and undertaking the training it prescribes
• You should stop training immediately and seek medical attention if you experience chest pain, severe shortness of breath, dizziness, fainting, severe pain, or any other warning sign
• You are solely responsible for following safety practices including wearing appropriate safety equipment, riding bikes only where legal and safe, swimming only in safe conditions with supervision when appropriate, and obeying all applicable traffic and safety laws
• The AI coaching feature generates responses based on patterns in your data and general training principles; the AI does not know your full medical history, current health, or environment, and may be incorrect or incomplete

Rift, its operators, contractors, and partners are not licensed medical professionals and do not provide medical advice, diagnosis, treatment, or care.

11. Third-party services

The Service integrates with third-party services (Strava, Apple HealthKit, Apple Watch, and others). Your use of those services is governed by their own terms and privacy policies. We are not responsible for the availability, accuracy, content, or practices of third-party services. We may modify, suspend, or remove integrations at any time.

The Service may also contain links to third-party websites. We are not responsible for the content of those sites.

12. Disclaimers

EXCEPT WHERE PROHIBITED BY LAW, THE SERVICE IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS, WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, SECURE, OR FREE OF VIRUSES OR OTHER HARMFUL COMPONENTS, OR THAT TRAINING PLANS WILL BE ACCURATE, COMPLETE, OR APPROPRIATE FOR YOUR INDIVIDUAL CIRCUMSTANCES.

13. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT WILL RIFT, ITS OFFICERS, MEMBERS, EMPLOYEES, AGENTS, OR LICENSORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS, REVENUE, DATA, GOODWILL, OR PERSONAL INJURY, ARISING OUT OF OR RELATED TO YOUR USE OF OR INABILITY TO USE THE SERVICE, WHETHER BASED ON WARRANTY, CONTRACT, TORT, STATUTE, OR ANY OTHER LEGAL THEORY, AND WHETHER OR NOT RIFT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

RIFT'S AGGREGATE LIABILITY TO YOU FOR ALL CLAIMS ARISING OUT OF OR RELATED TO THE SERVICE WILL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID US IN THE 12 MONTHS PRECEDING THE EVENT GIVING RISE TO THE CLAIM, OR (B) $100.

SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF CERTAIN WARRANTIES OR THE LIMITATION OR EXCLUSION OF LIABILITY FOR CERTAIN DAMAGES. ACCORDINGLY, SOME OF THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.

14. Indemnification

You agree to defend, indemnify, and hold harmless Rift and its officers, members, employees, agents, and licensors from and against any claims, liabilities, damages, losses, and expenses (including reasonable attorneys' fees) arising from or related to (a) your use of the Service, (b) your violation of these Terms, (c) your violation of any third-party right, or (d) your User Content.

15. Termination

You may stop using the Service and delete your account at any time. We may suspend or terminate your access to the Service immediately, without notice, if you violate these Terms, if we are required to do so by law, or if continuing to provide the Service to you would expose us to legal or operational risk.

The following sections survive termination: §8 (Your content and training data), §9 (Our content and intellectual property), §10 (Medical disclaimer), §12 (Disclaimers), §13 (Limitation of liability), §14 (Indemnification), §16 (Governing law and disputes), and §17 (General).

16. Governing law and disputes

These Terms are governed by the laws of the State of Delaware, United States, without regard to its conflict-of-law principles. The United Nations Convention on Contracts for the International Sale of Goods does not apply.

16.1 Informal resolution first

Before filing a claim, you agree to try to resolve the dispute informally by emailing app@riftendurance.com with a description of the issue. We will attempt to resolve the dispute within 60 days.

16.2 Venue

Any lawsuit related to the Service must be filed in the state or federal courts located in Delaware, and you consent to the personal jurisdiction of those courts.

16.3 Class action waiver

You and Rift agree to bring claims only on an individual basis and not as part of any class or representative action.

17. General

17.1 Changes to these Terms

We may update these Terms from time to time. When we do, we will update the "Last updated" date at the top. For material changes that affect your rights or obligations, we will notify you via email and / or an in-app notice at least 30 days before they take effect. Continued use of the Service after changes constitutes acceptance.

17.2 Entire agreement

These Terms, together with our Privacy Policy, constitute the entire agreement between you and Rift regarding the Service and supersede all prior agreements.

17.3 Severability

If any provision of these Terms is held to be unenforceable, that provision will be enforced to the maximum extent permissible and the remaining provisions will remain in full force and effect.

17.4 No waiver

Our failure to enforce any right or provision of these Terms will not be deemed a waiver of that right or provision.

17.5 Assignment

You may not assign these Terms without our prior written consent. We may assign these Terms in connection with a merger, acquisition, sale of assets, or by operation of law, with notice to you.

17.6 Contact

Questions about these Terms? Email app@riftendurance.com.

Postal address: Rift Endurance LLC, [Add postal address before going live].