iPhone Life magazine

Battery Gauge — tells you how much battery time you have left

If your battery is getting low and you're afraid to use your iPhone because you might run out of juice, this handy app could help. Battery Gauge ($0.99) not only tells you your current battery level, but also predicts how much time is left on your battery for each type of usage: Talk Time, Internet, Audio Playback, Video Playback, and Standby Time. Very useful. 

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Jim Karpen's picture

Jim Karpen holds a Ph.D. in literature and writing, and has a love of gizmos. His doctoral dissertation focused on the revolutionary consequences of digital technologies and anticipated some of the developments taking place in the industry today. Jim has been writing about the Internet and technology since 1994 and has been using Apple's visionary products for decades.