Battery Guard

Battery Guard rings loudly when your phone reaches a battery percentage you choose while charging — so you unplug on time and avoid leaving it on the charger.

SET YOUR TARGET
• Pick any charge level from 1% to 100% (default 80% for battery health)
• Live battery ring shows current level and charging status
• Adjust the target before you start monitoring

BACKGROUND MONITORING
• One tap to start or stop monitoring
• Keeps watching battery level while the app is in the background or the screen is off
• Persistent notification while monitoring so you know it is active
• Built-in setup guide for notifications and battery optimization on OEM phones

LOUD CHARGE ALARM
• When charging reaches (or passes) your target, a looping alarm plays like an incoming call
• Full-screen alert over the lock screen (optional toggle in Settings)
• Tap Stop to silence the alarm immediately — never blocked by ads
• Fires once per charging session so it does not repeat while still above target

ALARM SOUNDS & BEHAVIOR
• Three bundled offline alarm tones: Classic Ring, Digital Beep, Precision Pulse
• Optional vibration on alarm
• Toggle full-screen intent for lock-screen visibility

CHARGE MILESTONE UPDATES
• Optional notifications at 10%, 20%, 30%, and 50% while charging
• Helpful progress pings before your main target alarm

OFFLINE & PRIVATE
• Core monitoring and alarms work without internet
• No account, login, or cloud sync
• Settings stay on your device

The app alerts you - it cannot stop charging (that is controlled by your phone's hardware).