iBattery Pro is a tool that displays the current battery level of your iOS device using a percentage output and a bar indicator. iBattery Pro additionally displays the remaining time in hours and minutes for the most common usage scenarios of your device: - Standby - Internet (Wifi) - Internet (3G/4G) - Talk (iPhone only) - Games - Video - Audio iBattery Pro runs on all iOS devices. Since it's not possible to use iOS to detect the age of the battery in charge cycles, iBattery Pro now comes with an expert setting to calibrate your battery to the actual battery health state. To help you saving your battery power, iBattery Pro also comes with a set of battery optimization tips and a maintenance feature.