Last month it was reported that the X-Mode software development kit, used by many apps, was collecting and selling user location data, with the U.S. military among the buyers. In response, earlier this month both Apple and Google gave developers a deadline to remove X-Mode from their apps: seven days in Google’s case, fourteen in Apple’s. Apple found 100 apps that contained the code; X-Code claims 400 apps on all platforms, tracking 25 million devices in the U.S. and 40 million elsewhere. The Wall Street Journal story is behind a paywall; see The Verge and MacRumors for summaries.