The fine print, in plain English.

1. The service

weyt.ai is a strength training app with an AI coach, built and run by one person, Daniel Rhinehart, in California (“weyt.ai”, “we”). Features change, numbers get recalibrated, and things occasionally break. If the price of anything you use changes, you will be told in the app before it does. The service may be paused or ended; if it ever shuts down, you will be told in advance.

2. The subscription in the iPhone app

• weyt.ai Pro costs $9.99 a month. The iPhone app is sold in the United States only. It is monthly only: 7 days free, then $9.99 a month. Cancel anytime.
• Free trial. New subscribers start with a 7-day free trial, through Apple, one per Apple ID. If you do not cancel at least 24 hours before the trial ends, the subscription starts and the first month is charged to your Apple ID.
• Renewal. Payment is charged to your Apple ID when you confirm the purchase, or when the trial ends. The subscription renews automatically each month unless you turn it off at least 24 hours before the end of the current month; the renewal is charged within the 24 hours before the month ends.
• Cancelling. Manage or cancel in your iPhone's Settings (your name → Subscriptions) or in the App Store. Cancelling stops the next charge; Pro stays on until the end of the month you paid for. Deleting the app or your weyt.ai account does not cancel an Apple subscription.
• Refunds are handled by Apple under its own rules, through reportaproblem.apple.com.
• Price changes follow Apple's rules: you are told first and, where Apple requires it, asked to agree.
• No free version. There is no free version. If your subscription ends, your account and everything you logged are kept, and training is locked until you renew. Your workouts and history are never deleted because a subscription ends.

3. Not medical advice. You train at your own risk

Everything weyt.ai produces, including the coach, its reads, designed workouts, the weights for next time, form guidance, your standing and the lifting age, is AI-generated or computed fitness guidance, not medical advice. The coach is an AI. It is not a doctor, a physical therapist or a certified trainer, it cannot see you lift, it does not know your medical history, and it can be wrong.

• Talk to a doctor first. Do this before starting or changing a training program, especially if you have a medical condition or an injury, are pregnant, or have not trained in a while.
• You decide. Every workout, exercise, weight and rep count the app shows is a suggestion. You choose whether to do it, how much to lift and when to stop. Use your own judgment, use loads you can handle, use a spotter or safety bars where a lift calls for them, and stop if something hurts or feels wrong.
• Lifting carries risk. Strength training can cause serious injury. By using weyt.ai you accept that risk as your own.
• Your responsibility. To the fullest extent the law allows, you agree that weyt.ai and the person who runs it are not responsible for an injury, a health problem or any other harm that comes from training, including from doing an exercise, a weight or a workout the app or the coach suggested.

Percentiles and the lifting age are statistical comparisons against published population and lifter norms (see how it works). They are a comparison, not a diagnosis. The coach is an AI and can be wrong.

4. Your account

• You must be 18 or older.
• Keep your passphrase to yourself. You are responsible for what happens under your account.
• Give accurate numbers: your standards, age and bodyweight drive your standing.
• One account per person. Do not create accounts by automated means.
• You can delete your account at any time from Settings; see the privacy policy for what that does.

5. Your content and Shared workouts

You own what you log and build. When you share a workout, you let weyt.ai and other people show it, add a copy to their own workouts and train it, including after you unlist it or delete your account (it is then shown as from a “Former member”). A shared workout carries its lifts, sets, reps and how hard each set is, never your weights. A share never changes after you share it; your own copy is yours to edit.

Rules for what you share and what you ask the coach:

• No hateful, harassing, sexual or illegal content, and nothing that pretends to be another person.
• No spam, advertising, or links to other products in workout names, lift names or notes.
• No dangerous programming presented as safe (for example, loads or durations meant to injure).

Every share is checked by a word filter and an automated review before it goes up. A share that cannot be reviewed right away waits until it can. Every shared workout has a Report link. Every report is read. A workout reported by three established lifters comes off Shared until it is reviewed. weyt.ai may also take down a share or unlist it at its discretion.

6. Using the service fairly

• Do not probe, scrape, overload or reverse-engineer the service, or pull data from it by script. Limits on requests are enforced.
• Do not try to reach another person's data.
• The coach runs on Anthropic's AI, so Anthropic's usage rules apply to what you ask it.

7. Ending your use

You can leave at any time by deleting your account. weyt.ai can suspend or close accounts that break these terms, abuse the service, or put other people at risk, with notice where practical.

8. No warranty, limited liability

The service is provided “as is” and “as available”, without warranties of any kind, express or implied, including fitness for a particular purpose. To the fullest extent the law allows, weyt.ai and its builder are not liable for any injury, loss or damage arising from your use of the service or from relying on its output. Where liability cannot be excluded, it is limited to what you paid for the service in the twelve months before the claim. Nothing in these terms takes away a right the law does not let you give up.

9. The iPhone app and Apple

The iPhone app is licensed to you under Apple's standard Licensed Application End User License Agreement (apple.com/legal/internet-services/itunes/dev/stdeula); these terms apply alongside it. These terms are between you and weyt.ai, not Apple. Apple is not responsible for the app or its content, has no duty to provide support or maintenance for it, and is not responsible for any claim about it (including product liability, legal or regulatory claims, or a claim that it infringes someone's rights). If the app fails to match a warranty that applies, you may tell Apple and Apple will refund what you paid for it, if anything; beyond that Apple has no warranty duty. Apple and its subsidiaries may enforce these terms against you as a third party. You also agree to the App Store's own terms when you use the iPhone app.

10. Changes to these terms

These terms may change as the product grows. The date at the top moves when they do, and material changes will be announced in the app. Continuing to use weyt.ai after a change means you accept it.

11. Law and disputes

If something goes wrong, email support@weyt.ai first and give us 30 days to put it right. These terms are governed by the laws of the State of California. Any dispute that is not settled that way is brought in the state or federal courts located in California, unless the law where you live gives you the right to bring it there.

12. Contact

Questions about these terms, or anything else: email support@weyt.ai. See also the privacy policy.