Terms of Service
Last updated: 9 September 2026
These Terms of Service (“Terms”) are a binding legal agreement between you (“you” or “your”) and OSO Performance Technologies (“OSO”, “we”, “us”, or “our”) and govern your access to and use of the OSO website, applications, and services (together, the “Service”). By creating an account, clicking to accept, or otherwise accessing or using the Service, you acknowledge that you have read, understood, and agree to be bound by these Terms and by our Privacy Policy and Cookie Policy, which are incorporated by reference. If you do not agree, do not access or use the Service.
Please read these Terms carefully. They include important provisions that limit our liability, disclaim warranties, require you to assume the risks of physical training, and—except where prohibited by law—require disputes to be resolved by binding individual arbitration and waive your right to a jury trial and to participate in class actions (see Section 17).
1. Eligibility and age
You must have the legal capacity to enter into a binding contract to use the Service, and you may use it only in compliance with these Terms and all applicable laws.
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 and security
You agree to provide accurate, current, and complete information when you create an account and to keep it up to date. You are responsible for safeguarding your credentials and for all activity that occurs under your account, whether or not authorised by you. Do not share your account, and notify us immediately at legal@trainoso.com of any actual or suspected unauthorised use or security breach. We are not liable for any loss arising from unauthorised use of your account. We may refuse, suspend, or reclaim any account or username at our discretion, including where information is inaccurate or a security or legal risk arises.
3. Communications and marketing
By creating an account and accepting these Terms, you agree that OSO may send you emails about the Service, including product news, new features, training tips, and offers. Agreeing to these Terms is your consent to receive these marketing emails. Every marketing email includes a one-click unsubscribe, and you may withdraw your consent to marketing emails at any time using that link or by writing to legal@trainoso.com. Withdrawing marketing consent does not affect account, security, billing, or other transactional messages, which we send to provide the Service, and does not affect your continued use of the Service. We handle these communications as described in our Privacy Policy.
4. The Service; beta and changes
OSO provides tools to upload, analyse, and plan endurance training — including training-load metrics, activity analysis, routes, structured workouts, and integrations with third-party services. We may add, change, suspend, or discontinue any part of the Service, and may impose limits on features or storage, at any time and without liability to you.
Pre-release and beta features. Parts of the Service are provided on a pre-release, private beta, or “early access” basis. Such features may be incomplete, may change or be withdrawn, may contain errors, and are provided “as is” without any warranty. Do not rely on beta features for any critical purpose.
5. Licence and restrictions
Subject to these Terms, we grant you a limited, revocable, non-exclusive, non-transferable, non-sublicensable licence to access and use the Service for your own personal, non-commercial training use. All rights not expressly granted are reserved.
You agree that you will not, and will not permit or enable anyone else to:
- use the Service in violation of any law, regulation, or third party’s rights, or for any unlawful, harmful, fraudulent, infringing, or objectionable purpose;
- access, tamper with, or use non-public areas of the Service, or other users’ accounts or data;
- probe, scan, scrape, crawl, harvest, or index the Service or its data, or access it by any automated means, bot, or script, except as we expressly permit;
- copy, modify, translate, create derivative works of, distribute, sell, rent, lease, sublicense, or otherwise commercially exploit the Service or its content;
- reverse engineer, decompile, or disassemble any part of the Service, or attempt to derive its source code, except to the limited extent applicable law expressly permits;
- circumvent, disable, or interfere with security, authentication, rate-limiting, or usage controls, or introduce malware or harmful code;
- overload, impair, or disrupt the Service, its servers, or networks, or take any action that imposes an unreasonable load;
- remove, obscure, or alter any proprietary notices; or
- use the Service, or any data, output, or know-how obtained from it, to build, train, or improve a competing product or service, or for benchmarking.
6. Your content and data
You retain all ownership rights in the activity data and content you upload (“Your Content”). You grant OSO a worldwide, non-exclusive, royalty-free licence to host, store, reproduce, process, adapt, and display Your Content solely to operate, provide, secure, and improve the Service for you, and as otherwise described in our Privacy Policy. You represent and warrant that you own or have all necessary rights to Your Content and that it does not infringe or violate any third party’s rights or any law. You are solely responsible for Your Content.
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, as described in our Privacy Policy. You can withdraw this consent at any time by deleting your account, which stops further processing.
7. Feedback
If you send us ideas, suggestions, or other feedback about the Service, you grant us a perpetual, irrevocable, worldwide, royalty-free, fully sublicensable licence to use and exploit that feedback for any purpose, without any obligation or compensation to you. Feedback is not confidential.
8. Health, fitness, and assumption of risk
OSO is not a medical device and does not provide medical, health, or professional advice. The metrics, training loads, zones, recommendations, insights, and analyses are estimates generated from your data for general informational purposes only. They are not a diagnosis, treatment, or prescription, and must not be relied upon for medical, health, safety, or emergency decisions.
Assumption of risk. Endurance training and physical exercise carry inherent risks, including serious injury, illness, cardiac events, and death. You acknowledge and voluntarily assume all such risks. You are solely responsible for your training decisions and your safety. Consult a qualified physician before beginning, changing, or continuing any training program, and stop exercising and seek medical attention immediately if you experience pain, dizziness, shortness of breath, or any other concerning symptom. You use the Service and train entirely at your own risk.
Release. To the maximum extent permitted by law, you release and hold harmless OSO and its owners, operators, employees, and agents from any and all claims, liabilities, and damages arising out of or relating to your physical activity, training, or use of any output of the Service.
9. Third-party services and integrations
The Service integrates with third parties (for example, activity platforms, device makers, map and routing providers, and payment processors). Your use of those services is governed by their own terms and privacy policies, and we are not responsible or liable for them, their availability, or their acts or omissions. You are responsible for complying with the terms of any account you connect, and for the accuracy of data those services provide.
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.
10. Intellectual property
The Service, including its software, models, algorithms, design, text, graphics, and other content (excluding Your Content), and all intellectual-property rights in it, are and remain the exclusive property of OSO and its licensors, and are protected by intellectual-property and other laws. “OSO” and our logos are our trademarks; you may not use them without our prior written permission.
11. Subscriptions, fees, and billing
Some features may require a paid subscription. Prices and features will be described at the point of purchase. If you purchase a subscription, you authorise us and our third-party payment processor to charge your chosen payment method for the applicable fees and all taxes. We do not store your full payment-card details; they are handled by our payment processor.
Auto-renewal. Unless stated otherwise, subscriptions renew automatically for successive periods at the then-current price until cancelled. You may cancel at any time through your account or by contacting us; cancellation takes effect at the end of the current billing period, and you retain access until then.
Taxes. Fees are exclusive of taxes. You are responsible for all applicable sales, use, VAT, GST, and similar taxes, which we may collect and remit where required.
Refunds and changes. Except where required by applicable law, fees are non-refundable and there are no refunds or credits for partial periods or unused features. We may change prices and fees prospectively with reasonable notice; changes apply to the next billing period. Free or beta access may be modified or withdrawn at any time. You agree not to initiate chargebacks without first contacting us to resolve the issue.
12. Suspension and termination
You may stop using the Service and delete your account at any time. We may suspend, restrict, or terminate your access to the Service, in whole or in part, immediately and without liability, if you breach these Terms, create risk or legal exposure for us, or to protect the Service, other users, or third parties, or if required by law. On termination, your right to use the Service ceases; we may delete your account and data in the ordinary course, subject to our Privacy Policy and applicable law. Sections that by their nature should survive termination (including Sections 5–9 and 12–19) survive.
13. Disclaimers of warranties
To the maximum extent permitted by law, the Service and all content, data, metrics, and output are provided “as is” and “as available”, with all faults and without warranties of any kind, whether express, implied, statutory, or otherwise. OSO expressly disclaims all implied warranties, including merchantability, fitness for a particular purpose, title, non-infringement, and any warranties arising from course of dealing or usage of trade. We do not warrant that the Service will be uninterrupted, secure, timely, or error-free, that defects will be corrected, that any metric, estimate, or recommendation will be accurate or reliable, or that data synced from third parties will be complete or correct. No advice or information obtained from the Service creates any warranty not expressly stated here.
Some jurisdictions do not allow the exclusion of certain warranties, so some of the above exclusions may not apply to you; in that case such warranties are limited to the minimum extent permitted by law.
14. Limitation of liability
To the maximum extent permitted by law, in no event will OSO or its owners, operators, employees, agents, or licensors be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for any loss of profits, revenue, data, goodwill, or other intangible losses, or for any personal injury, illness, or death arising out of or relating to your training or physical activity, arising out of or relating to these Terms or the Service, whether based in contract, tort (including negligence), strict liability, or any other theory, and whether or not we have been advised of the possibility of such damages.
To the maximum extent permitted by law, the total aggregate liability of OSO for all claims arising out of or relating to these Terms or the Service will not exceed the greater of (a) the total amount you paid us in the 12 months before the event giving rise to the claim, or (b) USD 100. These limitations apply even if a limited remedy fails of its essential purpose.
Some jurisdictions do not allow the exclusion or limitation of certain damages, so some of the above may not apply to you. Nothing in these Terms excludes or limits liability that cannot lawfully be excluded or limited, including, where applicable, liability for death or personal injury caused by negligence, fraud, or fraudulent misrepresentation.
15. Indemnification
To the maximum extent permitted by law, you agree to defend, indemnify, and hold harmless OSO and its owners, operators, employees, and agents from and against any and all claims, demands, actions, liabilities, damages, losses, and expenses (including reasonable legal fees) arising out of or relating to: (a) your access to or use of the Service; (b) Your Content; (c) your breach of these Terms or violation of any law or third-party right; or (d) your training or physical activity. We may assume the exclusive defence and control of any matter subject to indemnification, in which case you agree to cooperate with us.
16. Governing law and venue
These Terms and any dispute arising out of or relating to them or the Service are governed by the laws of the State of California, USA, without regard to its conflict-of-laws rules, and by applicable US federal law (including the Federal Arbitration Act). Subject to Section 17, the state and federal courts located in California will have exclusive jurisdiction, and you consent to their personal jurisdiction and venue. If you are a consumer resident in the EEA, UK, or another jurisdiction whose law grants you mandatory protections, nothing here deprives you of the protections or the right to bring proceedings that the mandatory law of your country of residence gives you.
17. Dispute resolution; arbitration; class-action waiver
Please read this section carefully — it affects your legal rights.
Informal resolution first. Before starting any formal proceeding, you agree to contact us at legal@trainoso.com and give us 30 days to resolve the dispute informally and in good faith.
Binding arbitration. Except as set out below, you and OSO agree that any dispute, claim, or controversy arising out of or relating to these Terms or the Service will be resolved by final and binding individual arbitration administered by a recognised arbitration provider (such as the American Arbitration Association) under its applicable consumer rules, rather than in court, except that either party may bring an individual claim in small-claims court. The arbitration will take place in California or, at your election, your home county, or by video or telephone. The arbitrator has exclusive authority to resolve disputes about the interpretation or enforceability of this section.
Class-action and jury-trial waiver. To the maximum extent permitted by law, you and OSO agree that each may bring claims against the other only in an individual capacity, and not as a plaintiff or class member in any purported class, collective, consolidated, or representative proceeding. You and OSO waive any right to a jury trial. If this class-action waiver is found unenforceable as to a particular claim, that claim (and only that claim) will be severed and may proceed in court.
Carve-outs. Nothing in this section prevents either party from seeking injunctive or equitable relief in court to protect intellectual-property or confidentiality rights.
30-day opt-out. You may opt out of this arbitration and class-waiver agreement by emailing legal@trainoso.com within 30 days of first accepting these Terms, stating your name and that you opt out of arbitration. Opting out will not affect any other part of these Terms.
Consumers outside the US. If mandatory law in your country of residence prohibits pre-dispute arbitration or class-action waivers for consumers, this section does not apply to you to the extent prohibited.
18. Export controls and sanctions
You represent that you are not located in, and are not a national or resident of, any country or region subject to comprehensive sanctions, and that you are not on any government restricted-party or denied-party list. You agree to comply with all applicable export-control and sanctions laws and not to use the Service in violation of them.
19. Force majeure
We are not liable for any delay or failure to perform resulting from causes beyond our reasonable control, including acts of God, natural disasters, war, terrorism, civil unrest, labour disputes, failures or delays of third-party providers, internet or telecommunications failures, power outages, or governmental action.
20. General
Assignment. You may not assign or transfer these Terms or any rights under them without our prior written consent; any attempt to do so is void. We may assign these Terms freely, including in connection with a merger, acquisition, reorganisation, or sale of assets.
Entire agreement. These Terms, together with the Privacy Policy and Cookie Policy and any terms presented at the point of purchase, are the entire agreement between you and OSO regarding the Service and supersede any prior agreements on that subject.
Severability. If any provision is held unenforceable, it will be modified to the minimum extent necessary or severed, and the remaining provisions will remain in full force and effect.
No waiver. Our failure to enforce any provision is not a waiver of our right to do so later. No waiver is effective unless in writing.
Relationship; no third-party beneficiaries. These Terms do not create any partnership, agency, or employment relationship, and create no third-party beneficiary rights.
Notices. We may provide notices to you by email, through the Service, or by posting them here; you consent to receiving notices electronically. You may send notices to us at legal@trainoso.com. Headings are for convenience only.
21. 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, and for material changes we will take reasonable steps to notify you (for example, by email or in-app notice). Changes are effective when posted unless stated otherwise. Your continued use of the Service after changes take effect means you accept the updated Terms; if you do not agree, stop using the Service and delete your account.
22. Contact
Questions about these Terms: legal@trainoso.com, OSO Performance Technologies.