🔋 Free for iPhone & Android

Plug your battery,
before it's too late.

Your phone won't warn you until it's too late. Battery Monitor gives you three custom alerts — at 50%, 20%, and 10% — with distinct alarm sounds so you always know exactly where you stand.
Three intelligent alerts & Three distinct sounds (all customizable).
Battery Monitor is the only app that makes sure you never stare at 1% again.

50% Heads-up tone

20% Warning double-beep

10% Urgent alarm

Download for iOS Get it on Android

Designed for awareness

Three-stage alert system

Gentle nudge at 50%. Firmer warning at 20%. Urgent alarm at 10%. Each with a distinct sound so you know severity without looking.

Animated battery visual

A live, breathing battery display that shifts from green to yellow to red. See your charge state at a glance.

Intelligent cycle reset

Each threshold fires only once per discharge. Plug in and everything resets — no notification spam.

Minimal battery impact

Built with efficiency in mind. Battery Monitor itself uses negligible power while keeping watch.

Battery Monitor Premium

Make it yours

Set any threshold percentage. Choose your own alert sounds. Remove ads. One purchase, yours forever.

Available as an in-app purchase.