Privacy Policy
Brain Booster · Effective 8 September 2026
The short version: Brain Booster has no accounts, no ads and no tracking, and it does not send your data anywhere. Your progress lives on your device and nowhere else.
What stays on your device
Level progress, stars, best times, daily-test results and streaks, achievements, and your settings (sound, music, reminder time) are stored in the app's local storage on your device. We cannot see them. Deleting the app deletes them.
What the app sends to us
Nothing. The app works entirely offline and makes no connection to our servers. It contains no analytics, advertising or crash-reporting libraries.
If a future version adds an optional feature that compares your daily-test score with other players, it would send only the test number, your score and a random install identifier that cannot identify you; this page, its effective date and the app-store privacy labels would be updated before that happens.
Notifications
If you turn on the daily reminder, notifications are scheduled locally on your device. No notification server is involved and nothing about your schedule leaves the device. You can turn them off any time from the bell icon on the home screen or in your phone's settings.
Sharing
Sharing a result opens your device's share sheet with a short text (your score grid and a link). What you do with it, and with whom, is entirely under your control; we never see who you share with.
Fonts
The app loads its two typefaces from Google Fonts. When it does, Google receives the standard request data any web request carries (such as your IP address and browser identifier), governed by Google's privacy policy. If the fonts cannot load, the app falls back to system fonts and works exactly the same.
Children
Brain Booster is suitable for all ages and collects no personal information from anyone, including children.
Your choices and rights
- Deleting the app removes all of your data from your device, including the random identifier. Any scores already sent cannot be traced back to you, because the only link was that identifier.
- If you have questions about this policy, or believe we hold something that identifies you, contact us at acommonman1719@gmail.com and we will respond.
Changes
If we change what the app collects, we will update this page and the effective date above, and describe the change in the app's release notes.