App Genie — 26 apps in one

I like the idea of App Genie ($0.99), which is sort of a Swiss Army Knife of apps. It includes many of the most common tools you might need on your iPhone: tip calculator, currency converter, unit converter, weather, translator, battery level, barcode scanner, GPS locator, and many more. One app replaces many — a handy tool that you'll call upon often

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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.