After selling mobile ad startup Quattro Wireless to Apple in late 2009, Lars Albright took a job helping the iPhone maker work with its community of mobile app developers. He noticed that programmers were having trouble keeping users glued to their apps. Voila: business opportunity. This spring he left Apple to start Session M. He won't elaborate other than that the startup has raised $6.5 million in venture capital and will help app makers build customer loyalty. Albright is one of a string of Apple managers and engineers who've quit to get a piece of the mobile app boom, a gold rush they helped create. Startups including photo-sharing app Color, tablet magazine Flipboard, and iPad textbook maker Inkling were all founded by Apple departees.
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