How to detect the device is falling down or moving upwards in Objective-C or Swift? The Core Motion only detect the movement when we tilt the device I need to detect the free fall of the device. Is there any relevant sensors calculating the falling speed of the iPhone?
Apple iPhone 6 has integrated barometer sensor so this might be the sensor that you are looking for. To access barometer data you will need to use CMAltimeter and CMAltitudeData classes