Terms of Service

Last updated: 23 August 2026

These Terms of Service (“Terms”) govern your access to and use of OSO (the “Service”), operated by OSO Performance Technologies (“OSO”, “we”, “us”). By creating an account or using the Service, you agree to these Terms. If you do not agree, do not use the Service.

1. Eligibility

You must be at least 16 years old to create an account and use the Service on your own behalf.

Athletes aged 13 to 15. Junior athletes train and race seriously, and the Service is open to them on one condition: a parent or legal guardian must read and accept these Terms on the athlete’s behalf before the account is created, and must supervise its use. In that case the parent or guardian is the account holder for the purposes of these Terms — they are responsible for the account and its security, for the accuracy of the information in it, and for the athlete’s use of the Service. A parent or guardian may at any time ask us to provide, correct, or permanently delete the account and everything in it by writing to legal@trainoso.com.

Where local law sets a higher age. Some countries set a higher minimum age for consenting to online services on your own — in parts of the European Union it is as high as 16. Where the law that applies to you sets an age higher than the ages above, that higher age applies instead, and a parent or guardian must consent until you reach it.

Under 13. The Service is not available to anyone under 13, with or without parental consent. We do not knowingly collect personal data from anyone under 13. If we learn that an account belongs to someone under 13, we will close it and delete the associated data.

A note on health data. OSO processes training and health-related data, including heart rate, heart-rate variability, sleep and body mass. A parent or guardian consenting on behalf of an athlete aged 13 to 15 is consenting to that processing as described in our Privacy Policy, and should read it before creating an account.

2. Your account

You are responsible for your account credentials and for all activity under your account. Keep your password secure, provide accurate information, and notify us of any unauthorised use.

3. The Service

OSO provides tools to upload, analyse, and plan endurance training — including training-load metrics, activity analysis, routes, and integrations with third-party services. Features may change, be added, or be removed over time.

4. Health & fitness disclaimer

OSO is not a medical device and does not provide medical advice. The metrics, training loads, recommendations, and analyses are estimates for informational purposes only. Endurance training carries inherent risks. Consult a qualified physician before beginning or changing any training program, and stop and seek medical attention if you experience pain, dizziness, or other concerning symptoms. You use the Service and train at your own risk.

5. Acceptable use

You agree not to: use the Service unlawfully; upload content you do not have the rights to; attempt to access other users’ data; probe, scrape, overload, or disrupt the Service; reverse engineer or circumvent security; or use the Service or its data to build a competing product.

6. Third-party services

The Service integrates with third parties (e.g. Strava, map and routing providers). Your use of those services is governed by their terms, and we are not responsible for them. You are responsible for complying with the terms of any account you connect.

7. Your content and data

You retain ownership of the activity data and content you upload. You grant OSO a worldwide, non-exclusive licence to host, process, and display that content solely to operate and provide the Service to you. You are responsible for the content you upload and confirm you have the right to upload it.

By creating an account, you consent to OSO collecting, processing, analysing, and interpreting your training, performance, and health-related data (including data from services you connect) to generate the metrics, insights, and recommendations that make up the Service. You can withdraw this consent at any time by deleting your account, which stops further processing.

8. Intellectual property

The Service, including its software, design, and content (excluding your data), is owned by OSO and protected by intellectual-property laws. We grant you a limited, revocable, non-transferable licence to use the Service for your personal, non-commercial training use.

Third-party trademarks. Strava®, Garmin®, Wahoo®, ELEMNT®, Polar®, Hammerhead®, Karoo®, COROS®, TrainingPeaks® and Zwift®, together with any other product, company or service names, logos and marks that appear on this site or in the Service, are the trademarks or registered trademarks of their respective owners. We use them only to describe truthfully which services OSO works with, and where a logo is shown it identifies that company’s own service.

OSO connects to these services through their public developer APIs, under their own developer terms. That is an integration, not a partnership. OSO is an independent product and is not affiliated with, sponsored by, endorsed by, or certified by any of the companies named above, and none of them is responsible for OSO or for anything OSO computes from your data. Any reference to a company or device is a statement of compatibility only.

If you own a mark referenced here and would like its use changed or removed, write to legal@trainoso.com and we will act on it.

9. Subscriptions and payments

Some features may require a paid subscription. If you purchase one, you authorise us and our payment processor to charge the applicable fees. Unless stated otherwise, subscriptions renew automatically until cancelled; you may cancel at any time, effective at the end of the current billing period. Fees are non-refundable except where required by law. We may change pricing with reasonable notice.

10. Termination

You may stop using the Service and delete your account at any time. We may suspend or terminate your access if you violate these Terms or to protect the Service or other users. Provisions that by their nature should survive termination will survive.

11. Disclaimers

The Service is provided “as is” and “as available”, without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose, accuracy, and non-infringement. We do not warrant that the Service will be uninterrupted or error-free, or that any metric will be accurate.

12. Limitation of liability

To the maximum extent permitted by law, OSO and its operators will not be liable for any indirect, incidental, special, consequential, or punitive damages, or for any loss of data, profits, or goodwill, arising from your use of the Service. Our total liability for any claim will not exceed the greater of the amount you paid us in the 12 months before the claim or USD 100.

13. Indemnification

You agree to indemnify and hold harmless OSO from any claims arising out of your use of the Service, your content, or your violation of these Terms.

14. Changes to these Terms

We may update these Terms from time to time. We will post the updated version here and update the “Last updated” date. Continued use of the Service after changes take effect means you accept them.

15. Governing law

These Terms are governed by the laws of the State of California, without regard to conflict-of-laws rules. Disputes will be subject to the state and federal courts located in California, unless otherwise required by applicable law.

16. Contact

Questions about these Terms: legal@trainoso.com.