How could an app predict how the device will be used? There would be a large difference between heavy browser use, or gps navigation, vs standby for instance.
how accurate is it? I have used a few of those widgets that were always way off. I did use one that was fairly accurate but it didn't look all that good so i got rid of it.
^ so so... pretty accurate until the last 5%. It needs a couple of charges to calibrate but it's not reading it on the fly. So no battery drain. It's writing a history of past use & basing it on that.
Oooh I will also add that the time it shows is more representative of your average use time not average standby. To me that's a good thing but I could see why people wouldn't like it saying 80% & only 9:39 left when its been in your pocket for 9 hours already. Understand what I'm trying to say?