Brain Battle

Open Brain Battle → tap the Shop tab → scroll to the bottom → tap Restore. Your purchase will be verified with Google Play and restored automatically. Make sure you're signed in to the same Google account you used to buy it.

Brain Battle stores all progress locally on your device using offline storage. Uninstalling the App deletes this data permanently — we do not have a server backup. We recommend keeping the App installed and using Android's built-in backup if you'd like to preserve progress across devices.

Coins are virtual in-game currency with no monetary value. Spent coins cannot be refunded. You can earn more coins by completing levels, finishing daily challenges, or watching rewarded ads in the Shop.

Ad availability depends on your location and network connection. If you're on a slow or restricted network, ads may not load. This is normal and does not indicate a problem with the App. Try again later or switch to a different network.

A new Daily Challenge unlocks every day at midnight. Complete it to earn a large coin bonus and extend your streak. If you miss a day, your streak resets — but you can buy a Streak Freeze from the Shop (60 coins) to protect it for one missed day.

Try these steps in order: (1) Force-close and reopen the App. (2) Restart your device. (3) Uninstall and reinstall the App. If the problem persists, please email us with your device model and Android version so we can investigate.

Open Brain Battle → Settings → toggle off Daily Reminder. You can also manage notification permissions in your device Settings → Apps → Brain Battle → Notifications.

Currently Brain Battle is available for Android only via Google Play. An iOS version may be considered in the future — stay tuned.