PT‑One Privacy Policy

Effective 20 August 2026

What stays on your device

Your workouts, sessions, programs, challenges, progress history, body weight, pain notes and settings are stored on your iPhone. If you enable iCloud sync, they are also stored in your own iCloud, under your Apple ID, where we have no access.

When you use Petra (AI coaching)

Petra answers using large-language-model AI. When you ask Petra something (a question, a session build, a swap, a form check), the request is sent through our secure relay to an AI provider: Anthropic (Claude) and/or Google (Gemini). A request can include the context Petra needs to coach you well: the relevant workout details, recent training history, your equipment, body weight, pain or injury notes you have recorded, and, only when you use those features, photos of equipment or short exercise-form video frames. If you have granted Apple Health access, summary figures (such as heart rate or activity totals) may be included in your weekly review.

• We do not store the content of Petra requests or replies on our servers. Our relay passes them through and keeps only anonymous counters (how many requests, of what type, token counts) so we can run and pay for the service.
• The AI providers process requests under their API terms. On the services we use, API content is not used to train their models.
• Requests are not linked to your name or email; we don't know who you are (see below).

No accounts: how requests are authorised

PT‑One uses Apple's App Attest to confirm requests come from a genuine copy of the app on a real device. This creates a random cryptographic identifier on your device. It contains no personal information and is not connected to your name, email, or Apple ID. We use it to meter fair usage of the AI service (your "AI Credits"). We store this random identifier, a usage counter, and nothing else.

Feedback you choose to send

If you send feedback from inside the app, the text you write (and a screenshot, only if you attach one) is stored so we can read it and improve PT‑One. Sending feedback is always your choice.

Crash reports

If the app crashes, Apple's on-device diagnostics may prepare a technical report. PT‑One only sends it if you agree when asked.

Apple Health

With your permission, PT‑One reads limited Health data (such as steps, heart rate and workout minutes) to show your own trends and inform your weekly review. Health data is never sold, never used for advertising, and is only ever sent to an AI provider as part of a Petra request you make, as described above.

What we never do

• No advertising, no trackers, no analytics SDKs.
• No selling or sharing of your data with anyone beyond the AI processing described above.
• No accounts, sign-ups, or email collection.

Deleting your data

Deleting the app deletes your on-device data (and its cryptographic identifier; a reinstall starts fresh). Data in your own iCloud is under your control in iOS Settings. To remove feedback you have sent, contact us.

Changes & contact

If this policy changes in a way that matters, the app's release notes will say so plainly. Questions or requests: ptoneadmin@gmail.com