Terms of Service

Effective: May 18, 2026 · Last updated: May 18, 2026

These Terms of Service ("Terms") govern your access to and use of Stryxs (the "Service"), operated at stryxs.com by Nathalie Barbier as a sole proprietor ("Stryxs", "we", "us", "our"). By creating an account or using the Service, you agree to these Terms. If you don't agree, don't use the Service.

1. Eligibility

You must be at least 16 years old (or 13 in the United States, with parental consent) to create an account. If you are between 16 and 18, you confirm that a parent or legal guardian has reviewed and consented to these Terms. You must provide accurate information when registering and keep it up to date. You may only have one personal account.

2. The Service

Stryxs provides AI-generated training plans, workout analysis, pattern detection, and an AI coach chat for endurance athletes (running, cycling, swimming, triathlon, general fitness).

We offer two tiers:

Free tier: core features available without payment, with usage limits
Stryxs Pro: paid subscription with expanded features (unlimited plan generation, AI coach chat with full context, smart plan adjustments, advanced trend analysis, etc.)

The exact features in each tier are listed at stryxs.com/upgrade and may change over time. We will not remove paid features from your active subscription period without notice.

⚠️ 3. Health and medical disclaimer, read carefully

Stryxs is not a medical service. We are not your doctor, physical therapist, or qualified medical professional.

The training plans, AI coach guidance, workout analysis, and any other output generated by Stryxs are for informational and educational purposes only.
Endurance training carries inherent risks of injury, illness, or in rare cases, death. You assume all such risks when using the Service.
Consult a qualified physician before beginning any exercise program, especially if you have any medical condition, are pregnant, are over 35, or have not exercised regularly.
Stop exercising and seek medical attention immediately if you experience chest pain, shortness of breath, dizziness, lightheadedness, or any other symptom that concerns you.
Heart rate-based training requires accurate threshold values. Inaccurate values can result in over- or under-training.
The Service uses AI models that can produce incorrect, incomplete, or misleading information. Always apply your own judgment and seek professional advice for important decisions.

By using the Service, you acknowledge and accept these risks. You agree that Stryxs and its operators are not responsible for any injury, illness, loss, or damage arising from your use of the Service or from following its recommendations.

4. Your account and security

You are responsible for:

Keeping your password confidential
All activity that occurs under your account
Notifying us immediately at support@stryxs.com if you suspect unauthorized access

We reserve the right to suspend or terminate accounts that violate these Terms, are used fraudulently, or pose a risk to the Service or other users.

5. Subscription, billing, and refunds

5.1 Pro subscription

When you subscribe to Stryxs Pro:

You authorize us (through Stripe) to charge your payment method on a recurring basis (monthly or annual, as you select)
Subscriptions auto-renew at the end of each billing period unless you cancel before the renewal date
Pricing is shown at the time of subscription. We may change pricing for future billing periods with at least 14 days' notice via email

5.2 Cancellation

You can cancel your subscription anytime from Settings → Subscription. After cancellation:

You retain Pro access until the end of your current paid period
You will not be charged again
Your account converts to the Free tier; your data is preserved

5.3 Refunds

We generally do not offer refunds for partial billing periods. Exceptions may apply where required by applicable consumer protection law, or in cases of clear billing errors. Email support@stryxs.com to request a refund review. If you reside in the EU, UK, or another jurisdiction with statutory withdrawal rights, you may have the right to withdraw from a paid subscription within 14 days of subscribing, unless you have explicitly requested immediate access to the Service, in which case the withdrawal right may be limited.

5.4 Failed payments

If a payment fails (expired card, insufficient funds), we'll attempt to retry per Stripe's standard retry schedule. If payment cannot be collected, your account will revert to the Free tier.

6. Acceptable use

You agree NOT to:

Use the Service to break any law or regulation
Submit false, misleading, or fraudulent information
Attempt to access another user's account
Reverse engineer, scrape, or extract data from the Service in bulk except via features we explicitly provide
Send malicious code, automated scripts, or attack the Service's infrastructure
Use the Service to harass, abuse, or harm any person
Resell access, share account credentials with non-account-holders, or use the Service in a multi-user/team context without an applicable business plan
Misrepresent yourself as a Stryxs employee or affiliate
Bypass usage limits (e.g., free-tier rate limits) through technical means

We may suspend or terminate accounts that violate this section.

7. Your content and license

You retain ownership of all data you upload or create on the Service (workouts, intake answers, chat messages, profile information).

By using the Service, you grant us a worldwide, non-exclusive, royalty-free license to store, process, transmit, display, and modify your data solely to operate and improve the Service for you. This license terminates when you delete your data or your account, except for backup retention as described in our Privacy Policy. We do not claim ownership of your training data and we will never use it for advertising.

7.1 AI-generated content

The training plans, coach responses, and analysis generated by Stryxs's AI are produced for your use. You may use them however you'd like for your own training. We make no representation that AI-generated text is unique, factually correct, or fit for any specific purpose.

8. Third-party integrations

The Service integrates with:

Strava (optional connection for workout sync)
Stripe (payments)
Anthropic (AI provider)

Your use of those services is governed by their respective terms and privacy policies. Stryxs is not responsible for their availability, accuracy, or actions.

9. Service availability and changes

We aim to keep the Service available, but we don't guarantee 100% uptime. We may:

Take the Service down for maintenance, security, or upgrades
Modify, add, or remove features
Change pricing for new billing periods (with notice)
Discontinue the Service entirely (with at least 30 days' notice and a path to export your data)

We are not liable for any loss arising from downtime, feature changes, or discontinuation.

10. Termination

You can delete your account anytime from Settings → Account → Delete Account. Deletion is permanent and irreversible.

We may suspend or terminate your account immediately if:

You violate these Terms
We are required to by law
Continued operation poses a risk to other users or our infrastructure

We may also terminate the Service entirely with 30 days' notice and a data-export window.

⚠️ 11. Disclaimer of warranties

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.

We do not warrant that:

The Service will be uninterrupted, error-free, or secure
AI-generated content will be accurate, useful, or free of errors
Training plans will produce specific fitness results, race performance, or injury prevention outcomes
The Service will meet your specific requirements

Some jurisdictions do not allow exclusions of certain warranties, so portions of this section may not apply to you.

⚠️ 12. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW:

IN NO EVENT WILL STRYXS, ITS OPERATORS, AFFILIATES, OR SERVICE PROVIDERS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING BUT NOT LIMITED TO LOSS OF PROFITS, DATA, OR GOODWILL, ARISING OUT OF OR RELATED TO YOUR USE OF THE SERVICE.
OUR TOTAL CUMULATIVE LIABILITY TO YOU FOR ANY CLAIM RELATED TO THE SERVICE IS LIMITED TO THE GREATER OF (A) THE AMOUNT YOU PAID US IN THE 12 MONTHS PRECEDING THE CLAIM, OR (B) USD $100.

This limitation applies regardless of the legal theory under which a claim is brought (contract, tort, statute, or otherwise) and even if we have been advised of the possibility of such damages. Some jurisdictions do not allow such limitations, so portions of this section may not apply to you. Nothing in these Terms limits liability for matters that cannot be excluded by law.

13. Indemnification

You agree to indemnify and hold harmless Stryxs and its operators from any claim, damage, loss, or expense (including reasonable attorneys' fees) arising out of:

Your violation of these Terms
Your misuse of the Service
Content you submit to the Service
Your violation of any third-party right (including intellectual property or privacy)

14. Governing law and disputes

These Terms are governed by the laws of the State of Florida, United States, without regard to its conflict-of-law rules. Any dispute arising out of these Terms or the Service will be resolved exclusively in the state or federal courts located in Sarasota County, Florida, and you consent to the personal jurisdiction of those courts. If you reside in the EU, UK, or another jurisdiction with mandatory consumer protection laws, you retain the rights granted to you by those laws.

15. Changes to these Terms

We may update these Terms from time to time. When we do, we'll update the "Last updated" date at the top. If the changes are material, we'll notify you via email or a prominent in-app notice at least 14 days before they take effect. Your continued use of the Service after changes take effect constitutes acceptance of the updated Terms. If you don't agree with the updated Terms, your only remedy is to stop using the Service and delete your account.

16. Miscellaneous

Entire agreement: These Terms (together with the Privacy Policy) form the entire agreement between you and Stryxs regarding the Service.
Severability: If any part of these Terms is found unenforceable, the rest remains in effect.
No waiver: Our failure to enforce any provision of these Terms is not a waiver of that provision.
Assignment: You may not transfer your account or rights under these Terms. We may transfer ours in connection with a business transaction, with notice to you.

17. Contact

Questions about these Terms? Reach us at:

Email: support@stryxs.com
Service: stryxs.com