My BatteryHome / Privacy policy
My Battery privacy policy
Last updated: 2026-11-12. Plain words first; nothing here is hidden in small print.
My Battery keeps everything on your phone. It has no internet permission, we run no servers for it, and we never see anything about your phone or your charging.
What the app stores, and where
- Your settings: your charge limit, how often to remind you, the sound, vibration and volume, quiet hours, the low battery nudge, the theme, and whether you finished set-up.
- Your charge history: for each charge, when you plugged in and unplugged, the level at each end, the highest level and temperature it reached, how it was plugged in (wired, USB, wireless or dock), and how it ended (on time, charged to 100%, and so on). History is kept for a year, then the oldest charges are deleted by themselves.
- All of it lives in the app's private storage on your phone. It is left out of Android's cloud backup and phone-to-phone transfer, so it never leaves the phone that way either.
- There are no accounts, no analytics, no advertising, no crash reporting and no tracking.
What the app asks Android for, and why
- Notifications: for the nudge at your limit and the quiet "Watching your charge" note while your phone charges.
- Running while it charges (a foreground service): so Android lets My Battery watch the level until you unplug. It starts when you plug in and stops when you unplug.
- Starting after a restart: so watching works again after your phone restarts, without opening the app.
- Vibration: for the buzz with the nudge, if you choose one.
- Full-screen reminder: optional, and off until you turn it on. Like an alarm, the nudge can show over the lock screen.
My Battery reads only what Android shares with every app about the battery: its level, whether it is plugged in and how, whether it is charging, and its temperature. It cannot see anything else on your phone.
If you choose "Unrestricted" for My Battery in your phone's battery settings, that lets Android start the watching by itself when you plug in. It gives the app no other access.
What leaves your phone, and only when you choose
- Email to us: "Send feedback" opens your email app with a message you can read and edit before sending. It includes the app's version, nothing else. We read what you send and use it only to reply and to make the app better.
- Links: "Privacy policy", "Rate on Google Play" and "More from OneLifeStack" open your browser or the Play Store. Those are websites and apps of their own; My Battery sends them nothing.
Deleting
History > Clear history deletes every charge. Uninstalling the app deletes everything, settings included. There is nothing to delete anywhere else, because nothing is anywhere else.
Children
My Battery has no accounts and collects nothing, so there is no personal information to protect or share.
Changes
If this ever changes, we will say so in the app before it takes effect.