Privacy policy

Margin keeps your training on your phone. There is no account, and nothing you log is sent to us.

In the app

• Stays on your phone: workouts, sets, plans, body details, soreness and pain notes. Uninstalling the app deletes them. Settings › Backup saves a copy as a file you keep.
• Voice. Margin records the microphone itself and its speech model reads the set on the phone. The audio is kept in memory only while it is read, then dropped. It is never stored or sent. If you switch Settings › Speech model to Google’s recognizer, Google processes the audio under its own privacy policy.
• Imports and exports: only the file you pick. It is read on the phone.
• Payments: Pro is billed through Google Play. RevenueCat, our billing provider, receives a random app ID and your subscription status from Google to unlock Pro. We never see your card or Google account details.

Usage stats, only if you turn them on (Settings › Your data, or during setup). Off by default. When on, the app sends counts of what happens, never your workouts, weights, reps, exercise names or notes: the app opened that day; a workout finished (sets rounded to 5, minutes to 10, whether voice or a plan was used); a voice try (heard or not, how long it took); which value you corrected after voice; whether you kept, raised or lowered a suggested set; an import finished (which app, rounded counts); the Pro screen shown, closed or used to buy. They are tied to a random ID made on your phone, sent in batches when you are online, stored with Supabase for 13 months, and used only to fix and improve Margin. Turning them off deletes what hasn’t been sent and the ID. Turning them on gives Pro for 30 days from the first time, for as long as they stay on; turning them off pauses that Pro.

Permissions: microphone, only while voice logging is open. Notifications, for the rest timer and the workout in progress.

On this website

• Beta and launch list. When you join we store your email, your phone type (Android or iPhone), the date, the version of this notice, your share code, the code of the friend who sent you if any, and where you came from (for example “tiktok” or a website’s name). We use the email to add you to the Android beta on Google Play, to send beta and launch updates, and to give the Pro months your link earns. We don’t sell it or share it beyond the services below.
• Visits. Vercel Web Analytics counts page views without cookies and without storing who you are, so we can see which pages and links bring people in.
• One cookie, set only after you join, so this browser can show your share link. Nothing else.
• Services: Vercel hosts the site. Supabase stores the list. Request counters that stop automated signups use a hashed address that is deleted within minutes.

To leave the list, email us from the address you joined with and we delete it.

Children

Margin is not directed at children under 13.

Changes

If this policy changes, the date above changes.

Contact

margin.app.dev@gmail.com