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App Store Rank-to-Sales Revealed

The Unofficial Apple Weblog (TUAW) found this 12/20/2008 on joelcomm.com

Since the iTunes App store launched, many developers have been wondering exactly how app store rank relates to actual sales. I haven't seen anyone release this data as of yet, and while mine is incomplete, it can give you a glimpse into how ranking translates to units sold. Our application, ...