iPhone Screenshots


"BatteryLog" displays your battery usage in graph.
It acquires battery data upon launch and record log data in a timeline.

* Graph can be displayed both vertically and horizontally.
* You can send CSV converted log data by e-mail.
* When data is updated while charging, graph will be highlighted.
* Scale slider is available for zoom-in/zoom-out.
* Charging cycle (accumulated 100% counted as 1) shown in settings window. Note: Cycle counts are based on the log data acquired by BatteryLog.

1. "BatteryLog" is not capable of auto-updating. To get the latest data, you must launch application by yourself.
2. Note that all data is acquired in percentage. It is not actual voltage.

What’s New

Version 2.2

More updates to support iOS11

Ratings and Reviews

2.7 out of 5
18 Ratings

18 Ratings

atavision ,

One of the Best...

For some reason making an app that can accurately track battery usage seems to be as difficult for developers as making a battery with a decent life is for Apple. This is one of over a dozen different battery apps that I have tested.

Battery Log seems to have an accurate digital tally on battery life, but the graph is a little finicky in terms of its tracking. Not sure if it's because I am jailbroken or if partially charging the phone messes with the app's ability to track usage, but I will often open the app to see a straight graph line for the last week. This of course is not possible as I use my phone daily and usually charge each day as well.

I can see now as I write this review that Battery Log costs $3, not sure it's worth that much, a much better deal for 99 cents I would say. Oh and for those of you with slightly less than stellar eyesight, you'll need your cheaters for this app.

BHunted ,

Needs more...

I bought this for one reason on a whim. To try help me resolve the fast battery discharge since the 2.2 Apple iPhone firmware update which I never had prior. What I'd really like to see is why it is going down and/or what is going on whilst it is depleting. Apple has a logging program that does all this and shares it when the want to troubleshoot problems. But it is very indepth and will give you a headache trying to decipher it. This program would be nice if it could do the same thing on an easier basis. Simpler logs, etc...
I'm guessing it can be done because if they can pull the data, chances are a developer can too.

So, that being said, can you please add if possible, what is being used at time and anything else you can squeeze in? Would be great. Would be more than happy to add more stars then. :-)
After all, I can basically see the battery depleting... ;-) The more data, the better...

LA Gunsmith ,

OK app but needs polishing

For the current price you aren't getting much, that costs a star. A suggestion is to put a translucent % number on the graph or a % at the top or bottom. I know you can check the #/100 but what fun is that? I think if you put %s by the checked times dots it would be pretty cool. Other than that it ought to have the option to set an auto-update interval.
I do like the digital green and black style and it is a funtional app but could use a little polishing for it's price.


Valup Technology, Inc.
2.3 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Italian, Japanese, Korean, Simplified Chinese, Traditional Chinese

Age Rating


  • Family Sharing

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

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