Grumpy Old Geeks Products M7 Product M7 3 mentions in 1 episode A motion-related chip in the iPhone 5S that the host says a pedometer app uses. Mentions 28: Hitmen & Hookers Oct 5, 2013 42:18 That M seven chip ... does all of the crazy calculation with the magnetometer, the accelerometer. 42:39 Use the data that the M seven collects and just made a very bare bones pedometer. 43:06 So that M seven chip really works so far.