Last updated: September 12, 2026
The short version: AItrainr keeps your training data on your phone, with an encrypted backup tied to your account so a new phone can restore it. An account is optional — you can use the app, and subscribe, without one; creating one (an email address and password) turns on cloud backup and lets you use your subscription on other devices. With your permission (asked in the app before the first conversation, revocable in Settings → Privacy), messages and photos you send to the Personal Trainer — plus a summary of your training data — go to our server and to Anthropic (our AI provider) to generate a reply; nothing else is transmitted. We don't track you, show ads, or sell your data.
An account is optional. Without one, the app runs under an anonymous sign-in that carries no personal information; your data stays on your device and a subscription is tied to that device's sign-in (recoverable with "Restore purchases"). If you choose to create an account (email address and password) in Settings, we use it to sign you in on any device, to key your cloud backup, and to manage your subscription across devices. Authentication is handled by our infrastructure provider (Supabase); account emails — like password resets — are sent from noreply@aitrainr.app. We don't collect your name or contacts, and we never use your email for marketing without asking.
AItrainr is local-first. Your day-to-day data lives on your phone, in the app's local database:
So a lost or new phone doesn't mean lost training history, the app keeps a backup of your data (workouts, check-ins, logged meals, trainer memory, your Personal Trainer conversation, and settings) on our servers, tied to your account and encrypted in transit. The backup exists for exactly one purpose — restoring your data to your device. Deleting your account (Settings → Account) permanently deletes the backup along with the account.
Your permission first. Nothing is sent to the AI service until you agree on the in-app consent screen, which is shown before your first conversation with the Personal Trainer. You can withdraw that permission any time in Settings → Privacy; the trainer then stops sending data until you turn it back on. Workout, check-in, and nutrition tracking never require it.
What is sent. When you talk to the Personal Trainer (or finish a workout with the trainer enabled, which triggers a short recap), the app sends:
Who receives it. The data goes to our backend, which forwards it to Anthropic — the company behind the Claude AI model — to generate the trainer's reply. Anthropic is the only third party that receives it.
How it is used. Solely to generate the trainer's reply and to carry out what you ask (log a set, adjust today's plan, remember a note). It is not used for advertising, analytics, profiling, or sold to anyone.
AItrainr Pro is billed through your Apple App Store or Google Play account — we never see your payment details. We use RevenueCat to validate subscriptions; it receives your app account ID and purchase status, nothing more.
Deleting the app removes all local data from your device. Deleting your account in Settings → Account removes your account, your cloud backup, and your subscription record from our systems.
If you turn on the daily reminder, it is scheduled locally on your device. We don't send notifications from a server.
AItrainr is not directed to children under 13, and we don't knowingly collect data from them.
If this policy changes, we'll update this page and the "last updated" date above.
Questions? Email hello@aitrainr.app.