Privacy Policy

Datfit ("we", "us") operates the Datfit mobile app and the website at datfit.app. This policy describes what information we collect, why we collect it, and how we handle it.

1. Information we collect

Account information

• Your name, email address, and sign-in method, supplied when you create an account.
• If you sign up with email and password, we collect your email address, account name, and authentication credentials needed to operate your account.
• If you sign in with Google or Apple, we receive a provider-issued account identifier and your email. For Apple sign-in, we may also receive your name if you choose to share it. We do not receive your Google or Apple password.

Profile information

• Gender, age, height, weight, training goal (hypertrophy / strength / recomp), training experience (beginner / intermediate / advanced), and target training frequency — supplied during onboarding.

Training data

• Workout templates you create or accept, session logs (exercises, sets, reps, weights, rest periods, timestamps), and AI trainer interactions that occur during a session.

Security and session metadata

• Session records associated with your account, which may include login and security metadata such as IP address and user agent.

Diagnostic data

• Crash reports, performance traces, error events, and session replay or debugging data from the mobile app, backend, and website. These may include device model, operating system version, IP address, user agent, app navigation, visible screen content at the time of an issue, and stack traces. We do not intentionally send passwords or authentication tokens in these events.

2. How we use it

• To create and secure your account and authenticate sign-in.
• To provide onboarding, training plans, workout logging, and sync across devices.
• To run the in-app AI trainer on-device and support AI model download and setup.
• To monitor reliability, investigate crashes, and improve app performance.
• To protect against abuse, fraud, and unauthorized access.

3. How we store it

• On your device: training data is kept in a local SQLite database on your phone. Authentication tokens are kept in your operating system's secure keystore (iOS Keychain / Android Keystore) via expo-secure-store.
• On our servers: account data, profile data, training data, and session metadata are stored in a managed Postgres database.
• Sync: training data synchronizes between your device and our servers via ElectricSQL over HTTPS.

4. Third parties we use

We use the following processors. Each only receives the data necessary to perform its function.

• Google Sign-In (authentication) — receives the sign-in challenge and returns an account identifier and email.
• Apple Authentication (authentication) — same as above for iOS.
• Sentry (error, crash reporting, and replay diagnostics) — receives diagnostic events from the mobile app, backend, and website.
• ElectricSQL (sync transport) — receives training data in transit between your device and our Postgres database.
• Cloudflare (hosting and edge) — serves the website.
• Cloudflare R2 (object storage) — stores downloadable on-device AI model files.

5. AI companion

The in-app AI trainer runs on your device. The app may download an AI model file from Datfit-hosted infrastructure before you use the feature. After the model is present on your device, workout and session data used for inference stays on your device and is not sent to Datfit or a third party for inference.

6. How long we keep it

We retain account and training data for as long as your account is active. When you delete your account, we delete the associated account, profile, training records, and related active-system records within 30 days. Backup copies and some diagnostic logs may persist for up to 90 days before expiring through normal backup or log-rotation processes. Waitlist emails are removed on request; see §8.

7. Your rights

You may request access to, correction of, export of, or deletion of your data by writing to hello@datfit.app. We respond within 30 days.

8. Contact

Questions about this policy: hello@datfit.app.