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 the most accurate on the App Store! Don't download those clones you find everywhere, download this FREE 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! :)

If you have any problems, feel free to contact

Developer: Wern Jie


*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 amount.

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

More info at

What's New

Version 1.1

- iPhone X support
- Minor bug fixes

Ratings and Reviews

4.0 out of 5
7 Ratings
7 Ratings

Best battery for charging timr

I had used Battery Magic and Battery Doctor apps which shows the remaining charging time before battery is fully 100% charged. This is very useful because I am cautious to not overcharge my iphone, iPads or Samsung tablets batteries. Knowing the time required, i.e. 2 hrs 39 min til 100% charge helps me when I am short on time. If I need to get started and drive , I will connect my external battery to my iphone.

Thank you for developing the best battery app. I love knowing the time required for full 100% charge. In addition, it gives temperature of battery, time iphone/ipad disconnected from charging, and usage time.

I have already shared with a friend already. The app is excellent so I wanted to wrote a detailed review which will help encourage other people to download this excellent battery app.😃😃😃😃😃


Incredible Battery App

Ok I typically am not one to write reviews and have only done a handful in the app store. I have searched and tried numerous battery Apps both free and paid over the years.
This App is by far the best on how precise the calculations are and the manner in which it was designed for the user. I love everything about it including the widget.
This App is awesome, thanks so much for making.


Might Be Worthy

Unfortunately, my iPhone 6s Plus is not updating the current battery level. I constantly have “100%” with a FULL battery icon until my phone loses power. I don’t want to constantly charge my phone but I don’t want to lose power at the worst time either. I hoped this app would process a real-time battery check & report the correct/adjusted level BUT this app uses the battery level reported by the iPhones’ iOS which is incorrect. Disappointing for me. 😔

Developer Response

Hi there,

Thank you for your suggestion. However, the app already shows when the phone battery is much more than the reported 100% by iOS and is completely full - it'll say "Battery Completely Full, Charging Stopped". You seem to be looking for the ability to see that the battery is filled to the max it could possibly handle so as your phone doesn't drain power at the wrong time, and it does report that.

It seems like you have an odd use case of a battery app here (because iOS apps are actually not allowed to do so unless they manage to sneak past Apple's review)

I would recommend you to take advantage of the $29 official battery replacement program discount that ends this year because it sounds like your phone is having an overly old battery that has degraded that could benefit from a battery replacement.

At the same time, do note that it is not recommended for you to charge your phone to the absolute maximum that your phone can handle, as doing so will damage lithium ion batteries over time, hence the app displays the charge shown by the phone rather than an "adjusted" charge. You wouldn't want an app to lead you to further damage your battery, would you? This is also probably why you might have a problematic battery - you may have damaged the battery faster than normal by forcing it to keep as much charge as possible over a long period of time, and draining to 0% then charging to over the limit of 100% over and over again. Apple doesn't allow any new apps (or app updates) to display these information anyway unless they manage to sneak past apple, so this functionality is not included.

Hope this helps!

- Wern Jie


Eng Tat Lim
17.1 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 Wern Jie Lim


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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