Terms of Service

Last updated: October 9, 2026

These terms are the agreement between you and Ken Ohara ("we", "us") for using the Tendonly app and website ("Tendonly"). Please read them, especially the safety section. By using Tendonly, you agree to these terms and to our Privacy Policy. If you don't agree, don't use Tendonly.

1. Safety first: Tendonly is not medical care

• Tendonly gives general rehab guidance: exercises, how to do them, nutrition targets, and phases back to sport. It is not medical advice, diagnosis, or treatment, and it does not replace a doctor, physical therapist, or athletic trainer.
• Tendonly doesn't diagnose injuries. Questions such as the ankle safety check only help you decide whether to see someone first. They can be wrong, and they don't rule out a fracture or other serious injury.
• Get your injury checked by a qualified clinician before starting, and follow their advice whenever it differs from the app. If a clinician says not to do an exercise, don't do it.
• Stop any exercise that causes sharp pain, pain above 3 out of 10, or that feels wrong, and tell your trainer or doctor.
• Tendonly is not an emergency service. Nobody monitors it around the clock, and a trainer or parent might not see a check-in or warning sign right away. If you have chest pain, trouble breathing, a foot that is cold, pale, or blue, or any other emergency, call 911 or your local emergency number.
• Decisions about returning to practice or games belong to you, your parents or guardians, and your clinicians or athletic trainers, not to the app.

2. Exercise has risks

Rehab and sport involve physical activity, and physical activity can cause injury, including re-injury. You choose whether and how to do each exercise, at your own pace. To the fullest extent the law allows, you take on the risks of doing the exercises and following the suggestions in Tendonly. If you are under 18, your parent or guardian should review these risks with you.

3. Who can use Tendonly

• 18 and older: you can agree to these terms yourself.
• 13 to 17: you may use Tendonly only with the permission of a parent or guardian, who must read and agree to these terms and the Privacy Policy with you.
• Under 13: a parent or guardian must set up and manage Tendonly for you.
• Parents and guardians: by letting your child use Tendonly, you agree to these terms for yourself and on your child's behalf, and you are responsible for your child's use of Tendonly.
• Trainers and team admins: you must be at least 18. If you use Tendonly for a school, club, or other organization, you confirm you are allowed to act for that organization.

4. Trainers, teams, and organizations

• Athletic trainers, physical therapists, and other professionals who use Tendonly stay fully responsible for their own professional judgment, licenses, and duties to their athletes. Tendonly is a tool to support that work; it doesn't supervise athletes or replace a trainer's assessment.
• A trainer approving a phase change or marking a test as passed is the trainer's decision, not ours.
• Team admins are responsible for who they invite, which trainers they assign, and keeping team codes private.
• If a school, club, or other organization signs a separate agreement with us, that agreement applies to its use of Tendonly alongside these terms. If they conflict, the separate agreement wins for that organization.

5. Your information

Our Privacy Policy explains what Tendonly stores and how. In short, in the current version everything stays on your device. You are responsible for the information you enter and for keeping your device secure. Don't enter information about another person unless you have their permission (or, for a child, you are their parent or guardian).

6. Using Tendonly fairly

Please don't:

• use Tendonly for anything illegal or harmful, or to harass anyone;
• pretend to be someone else, such as a trainer or a parent you are not;
• enter someone else's health information without permission;
• copy, sell, or resell Tendonly or its content, or use it to build a competing product;
• try to break, hack, overload, or reverse engineer Tendonly, except where the law allows it.

7. Who owns what

• Tendonly, including its software, design, rehab plans, text, and logo, belongs to us or our licensors and is protected by law. We give you a personal, non-transferable permission to use Tendonly for its intended purpose while you follow these terms.
• The information you enter belongs to you.
• Some parts of Tendonly, such as open-source software and fonts, are used under their own licenses, which apply to those parts. We name them in the app under Credits.

8. Feedback

If you send us ideas or feedback, we may use them to improve Tendonly without owing you anything.

9. Changes to Tendonly and to these terms

• Tendonly is still being built. We may add, change, or remove features, or stop offering Tendonly, at any time. Tendonly is currently free. If we ever charge for something, we will tell you the price before you pay.
• We may update these terms. We'll change the date at the top and ask you to agree again in the app. Changes apply once you agree to them in the app.

10. Ending your use

You can stop using Tendonly at any time. Delete your information with Delete all data on this device or by deleting the app. We may stop providing Tendonly to anyone who breaks these terms.

11. Disclaimers

Tendonly is provided "as is" and "as available." To the fullest extent the law allows, we make no promises or warranties, express or implied, including that Tendonly will be accurate, complete, suited to your particular injury, uninterrupted, or error-free, or that following it will lead to any particular recovery or return-to-play result. Some places don't allow some of these disclaimers, so some may not apply to you. If you live in New Jersey, the limits in Sections 11 and 12 apply only as far as New Jersey law allows.

12. Limits on our liability

To the fullest extent the law allows:

• we are not liable for indirect, incidental, special, consequential, or punitive damages, or for losses that come from relying on Tendonly instead of a clinician, from delays in anyone seeing a check-in or warning sign, or from information lost from your device, to the extent the law allows us to limit them; and
• our total liability for any claim about Tendonly is limited to the greater of the amount you paid us for Tendonly in the 12 months before the claim, or $50.

Nothing in these terms limits liability that can't be limited by law, such as liability for gross negligence or intentional misconduct where the law doesn't allow it to be limited, or your rights as a consumer that can't be waived.

13. Disputes

If you have a problem with Tendonly, please email economicotechmexico@gmail.com first so we can try to fix it informally. These terms are governed by the laws of the place where you live, and you can bring any dispute that isn't resolved informally in the courts there, including small-claims court where you are eligible.

14. Other terms

• If any part of these terms can't be enforced, the rest stays in effect.
• If we don't enforce part of these terms right away, we can still enforce it later.
• You can't transfer these terms to someone else. We may transfer them if Tendonly is taken over by another person or company, who would then be bound by them.
• These terms, the Privacy Policy, and any separate agreement with your organization are the whole agreement about Tendonly.

15. Contact

Ken Ohara
Email: economicotechmexico@gmail.com