Meter Master is the ultimate meter/sensor toolkit. Meter Master detects all available sensors on your phone and provides you insight into the inner workings of the sensor hardware. You may view all sensor readings on a single screen where you can drill down into details on the hardware and statistical usage measurements. In addition, you may view single sensor/meters, watch real-time graphing of the readings, log readings and review second-by-second sensor readings, and view explanations of the sensor hardware and its function.
Future versions (Meter Master Pro) will feature additions to the toolkit including a compass, metal detector, light meter, and more.