Wern Central

Battery Monitor

Published on Dec 8, 2016
Last updated on Sep 13, 2023


Battery Monitor app icon
Battery Monitor
Simple & Accurate

Supported Platforms







(4.3 out of 5 stars)


Monitor battery life with down-to-the-minute accuracy*!

WARNING: Battery level detection is incompatible with iOS 17 and iPadOS 17 and will not operate correctly. This app has also been removed from the App Store while this is being worked on. Please do not perform calibrations on these new OS versions.

Battery Monitor, the most accurate battery life monitoring app on the App Store. With its simple battery life calibration, you can get estimations with down-to-the-minute accuracy (±1min)! It also have a handy widget to access estimations anywhere!

This app contains calibration for battery usage, battery charging time and much more, making it one of the most accurate on the App Store! Don’t download those clones you find everywhere, download this app now!


  • ±1 min battery life accuracy*
  • ±1 min charging time accuracy*
  • Simple interface, easy to use
  • iOS Widget for easy access
  • One time battery calibration

Download and enjoy! :)


  • Accuracy is based on a perfectly calibrated device, which is required for high accuracy. Your device’s accuracy may vary.

  • Estimated values may sometimes progress up and down, but usually the first estimated value is the most accurate.

  • Battery life time remaining means how long you can use your phone continuously, unless specified in calibration settings.

  • This app’s charging speed calibration is currently only optimised for iPhone. Charging time accuracy may vary on iPad.

  • Even if the app doesn’t work as expected, you’ll still get is around ±10 mins accuracy, and is still one of the most accurate on the App Store.


If you have any problems or want to seek further queries, please contact me via the support page - I’m happy to help! :)