Find My iPhone
RECOMMEND-You can use it to track down your iPhone. You can download it for iOS.
Itorch 4
RECOMMEND-It turns your iPhone in to a torch. You can download it for iOS.
Onavo
RECOMMEND-You can use it to see how much data your phone is using. You can download it for Android & iOS.
RL Classic
RECOMMEND-You can use it to scan any barcode and compare price with eBay and Google. You can download it for Android & iOS.
Battery Doctor
RECOMMEND-You can see how much power is left and check what is use most of the battery`s power. You can download it for iOS.