Instantly know for how long you can use each app.

This is the perfect battery monitor for your Android or tablet. It is simple, beautiful and can be calibrated specially for your Android.

.~ Widget + Notification Bar! ~.

If you have a new or rare Android, please run calibration tests to share your results with the community and make this app even more precise !

Try it now ! It's simply the best at what it does.

batterytool

Play instant games instead
No Download Required