The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Rambo Limited:
Battery Guru is a convenient app includes many easy tools: Battery Booster, Flashlight,Ruler and System Status Monitor.BATTERY BOOSTERBattery Booster is a tool that displays the current battery level of your iPhone or iPod Touch using a percentage output and a circle indicator. It additionally displays the remaining time in hours and minutes for the most common usage scenarios of your device: - Standby - Internet (Wifi) - Internet (Cell Network) - Talk (3G) - Talk (2G) - Video - Audio FLASHLIGHTFlashlight turns your iPhone(iTouch) into a real brightest led flashlight.Strobe and Blink Mode is also supported.SYSTEM STATUS Memory - wired, active, inactive and free memory Storage(Disk) - Used and free disk capacity Process Information - List All Process Running Network - IP and MAC addresses, Hostname and WLAN, 2G/3G support Capabilities Operating System and HardwareUNIT CONVERTUnit Convert lets you convert area, angles, currency, data, density, energy, force, length, mass, mileage, power, pressure, speed, temperature, time, volume, volume flow and more...You can even create your own unit conversions for anything you want, quickly and easily. RULER