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With the iOS sandboxing the way it is, I don't see how they can do anything useful. They can't access any system APIs or other processes to actually do something to save life. Third-party apps can't even turn Wifi/Bluetooth on or off.
 
They might be able to tell you the current status, charge level, of your battery but your phone/iPad already does that. Other than that, they don't do anything useful.
 
I'm not certain that they don't help. I plug in every night and can't see any harm done. storevreviews are pretty good
 
Wirelessly posted

I never used them. Its useless to keep track of batteries second by second. Not worth ur time
 
I really wish I came up with the idea to create one of these apps first... so many people fell for it :/
 
As everybody have mentioned these so called apps are really useless..I dont ever get any benefits from these apps.
 
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