Terms of Service

1. The agreement

Gradus (the “app”) is operated by [LEGAL ENTITY — set before launch] (“we”, “us”). By creating an account or using the app you accept these terms. If you do not accept them, do not use the app.

The Privacy Policy explains what the app stores and forms part of this agreement.

2. Who may use it

You must be at least 13 years old to hold an account. If you are under the age of majority where you live, you may only use the app with the involvement of a parent or guardian who accepts these terms on your behalf.

3. Your account

• An account is personal and belongs to one person. It is the record of one athlete’s training, and the coaching engine reads it as such: prescribing loads from a log that two people have been writing into produces figures that are wrong for both of them.
• Do not share your password or sign-in token, and do not let anyone else use your account.
• You are responsible for what happens under your account, and for keeping the details you give us accurate.
• Tell us promptly if you believe someone else has gained access to your account.

4. This is not medical advice

What the generated workouts are

When the app fills a session with a prescribed workout, that plan is arithmetic over the sets you have already logged. It is not a coach watching you lift. It does not know your injuries, your medications, your sleep, your medical history, how a movement feels today, or anything else you have not entered. Treat every prescription as a suggestion to weigh against your own judgement, and change or ignore it whenever your judgement says otherwise.

What the one-rep-max figures are

The app never asks you to test a true one-rep max, and it never measures one. Every one-rep-max number it shows is estimated from the reps and loads you logged, using published rep-max formulas whose error grows as the rep count rises. Prescribed loads are anchored to that estimate. Do not load a bar on the strength of a projected number alone.

What the calorie figures are

Calorie figures are estimates, produced by population-level equations — the Mifflin-St Jeor resting-metabolic -rate equation among them — applied to what you logged. They are shown as a range rather than a single number because that is what the underlying science supports, and the range widens when height, age, biological sex or a recent weigh-in is missing. They are not measurements of your body, they should not be used to manage a medical condition, and they are not a substitute for advice from a dietitian or physician.

What the goal projections are

A projection toward a strength goal is a range of dates with a stated confidence, not a promise. Where the evidence does not support a projection, the app says so instead of naming a date. Nothing in the app guarantees a result.

5. Acceptable use

You agree not to:

• try to access another person’s account, data or records, by any means;
• probe, scan or interfere with the security of the app, or attempt to defeat its authentication or rate limiting;
• automate requests at a volume that degrades the service for others, or scrape it in bulk;
• upload or enter anything unlawful, abusive, or infringing — this includes exercise names and session notes, which are free text;
• misrepresent who you are, or create an account on someone else’s behalf without their knowledge;
• resell, sublicense or commercially redistribute the app or its output;
• use the app to give training or medical advice to other people as though it were professional guidance.

6. Your data and the shared library

Your training log is yours. We claim no ownership of it. You give us only the permission we need to run the service: to store your entries, and to process them to show you your history, your progress, your estimates and your generated workouts.

One exception is worth stating plainly. Exercise names live in a shared library. If you add a custom exercise name, it becomes available to other users of the same deployment, and it stays in the library after you delete your account — with your authorship removed — because other people’s logged workouts refer to it. Do not put anything personal in an exercise name. Your sets, weights, notes, weigh-ins and biometrics are never shared this way; only the name of the movement is.

You can export your data and delete your account as described in the Privacy Policy.

7. Availability and change

We do not promise the app will be available at any particular time or without interruption. We may change, suspend or discontinue features, and we may impose limits on usage. We will try to give reasonable notice before removing something you depend on, but we cannot always do so.

Keep your own copy of anything you cannot afford to lose. Use the export feature. Backups and restoration are on a best-effort basis and we do not guarantee recovery of lost data.

8. Provided as-is

The app is provided “as is” and “as available”, without warranties of any kind, whether express or implied, including any implied warranties of merchantability, fitness for a particular purpose, title, or non-infringement. We do not warrant that the app will be uninterrupted, secure or error-free, or that any estimate, projection or prescription it produces is accurate or suitable for you.

Some jurisdictions do not allow the exclusion of certain warranties, so parts of this section may not apply to you.

9. Limitation of liability

To the fullest extent permitted by law, we will not be liable for any indirect, incidental, special, consequential or punitive damages, or for any loss of profits, data, or goodwill, arising out of or relating to your use of the app — including any injury, health outcome or property damage arising from training you undertook while using it.

To the fullest extent permitted by law, our total liability for all claims relating to the app will not exceed the greater of the amount you paid us for the app in the twelve months before the claim, or [LIABILITY CAP AMOUNT — confirm with counsel before launch].

Some jurisdictions do not allow the limitation of liability for personal injury or for certain other damages, so parts of this section may not apply to you. Nothing here limits liability that cannot lawfully be limited.

10. Indemnity

You agree to indemnify and hold us harmless from any claim, demand, loss or expense (including reasonable legal fees) arising from your use of the app, your breach of these terms, or your violation of anyone else’s rights.

11. Ending the agreement

You may stop using the app at any time and delete your account from within it. We may suspend or disable an account that breaches these terms, that we reasonably believe is being used to harm other users or the service, or where we are required to do so by law.

Sections 6 (as it concerns the shared library), 8, 9, 10 and 12 survive the end of this agreement.

12. Governing law

These terms are governed by the laws of the State of North Carolina, United States, without regard to its conflict-of-laws rules. You and we agree to the exclusive jurisdiction of the state and federal courts located in North Carolina for any dispute arising out of or relating to these terms or the app, except that either party may seek injunctive relief in any court of competent jurisdiction.

13. Changes to these terms

We may update these terms. When we do, we will change the date at the top of this page, and for significant changes we will tell you in the app or by email. Continuing to use the app after a change means you accept the updated terms; if you do not, stop using the app and delete your account.

14. Contact

Questions about these terms: [CONTACT EMAIL — set before launch], [POSTAL ADDRESS — set before launch].