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Battery Grapher

Battery Grapher graphs your historical battery levels and learns your habits to make smart predictions on what your future battery levels will be. Developed specifically with energy consumption in mind, Battery Grapher has almost no impact on battery life.
Category Price Seller Device
Utilities $1.99 Joshua Bird iPhone, iPad, iPod

SMART PREDICTIONS
Battery Grapher uses historical battery levels to intelligently predict what your battery level will be throughout the rest of the day, allowing you to plan when to next charge your device. The longer you have Battery Grapher installed, the more accurate future battery level predictions will be.

LOW ENERGY CONSUMPTION
Battery Grapher is made for people who want to extend the battery life, meaning that low energy usage is a priority. The app runs a background task only once an hour, and doesn't require a network connection, which keeps energy consumption extremely low.

CUSTOMIZABLE NOTIFICATIONS
Battery Grapher allows you to set notifications that fit your needs. You can get the app to notify you when you battery drops below a preset percentage, or if you only have a certain number of hours left before your battery runs out. (currently only available on watchOS)

ALL COMPLICATIONS & WIDGET SIZES SUPPORTED
Battery Grapher supports all complications & widget sizes. Complications can show hours before needing to charge, or battery %. Both complications and widgets are customizable from within the app.

Reviews

Helpful
Calvin1038

This is something I saw and knew I needed! I have always been worried about battery in short term and the long term this will help my watch. If there are more added features, it is a good buy.


Great Battery App!!!
hazelgreene

This will do what you want and need. Don’t miss out!!!


Amazing already!!
cj_mason375

Amazing app, already impressed


Great find
dis a point'd

App looks and works well! Developer is quick to reply and has many great ideas in store for the app.


Has great potential but also an issue for me
JimThePCGuy

Works fine on my 44mm S4 but on my wife’s 40mm S4 I can’t add the complication to any watch face, using the My Watch iPhone app. I can, however, add the complication by editing the watch face directly on the watch. Tried the standard debug things, rebooting, uninstall/reinstall but to no avail.


Helped me @ the Apple Store
Duane Williams

I can’t tell how effective Battery Grapher is at predictions, but it certainly helped me at the Apple Store when my battery indicator was acting weirdly. Basically, for hours on end, my watch appeared to be stuck at 100% charge, although I knew it wasn’t. Then it would suddenly plummet into power reserve mode. I took screen shots of the BG graphs and showed them to the person helping me and he immediately grasped the problem. The BG graphs were a close match to the diagnostics the Apple person ran on the watch and they accepted my watch for repair. It was my second attempt at the Apple Store. The first time I didn’t have the BG evidence and I got no satisfaction.


Useful information about battery
BadDomino5

I like the developer's interest and enthusiasm. This app is nice and displays useful info about my watch charge. For a first release version it works very well. Some room for improvement. I'd like to see the accuracy improve quicker. It went from wildly inaccurate to somewhat close within a few days of use. The app actually tells you how accurate its predictions are. Until the hone in on your usage I'm afraid they aren't much use. Mine has gone from "very bad" to "ok" in about five days. Some improvements I'd like to see are in the complication. I'd like to see both a battery % charge and the calculated time remaining together. Either text % and the "progress bar" as time left or text time left and the progress bar as %. Worth the download. Hoping to see where this app goes in the next few months. Good luck!


Not bad so far. One minor ‘issue’/suggestion
Mvbenz

Not bad. I did run into a minor ‘Thing’ that should be looked at. I had to unpair and repair the watch and lost the accuracy history. When I repaired, I told it to do a restore from the last backup but that didn’t help. Now I need to wait for it to relearn before it is more accurate. Can the app be set to backup to the phone once a day with the option to reload the data should you have to repair the device?


Scam or just useless?
BethesdaRoger

As near as I can tell after trading a number of emails with the alleged developer of this app, he can provide no useful information. Save your money. This app is useless and provides nothing that is not provided free by the Apple app. Again, save your money.


Can’t tell if it works.
justmeeagainn

Edit: it doesn’t work at all. The complication (which I consider the most important part of any watch app) makes no sense. The numbers still go up and down seemingly randomly. The app itself may be accurate but I don’t want to open up the app every time I look at my watch. The correct information should be visible in the complication. And the accuracy is allegedly “ok”, so that shouldn’t be the issue. I really have no idea if this app works or not. The numbers it displays show no rhyme or reason. They go up and down or stay put and make no sense. They almost seem randomly generated. When I open the app, the only thing I see is the accuracy is bad. I wrote the dev a question on Reddit and got no reply. I can’t recommend buying this. Hopefully it will improve and won’t have been a waste of money.


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