Meter Google Creative Lab

This data-driven live wallpaper
displays the battery level, wireless signal and number of
notifications of your device in a simple visualization. It cycles
through three visualizations with every unlock, and each wallpaper
can be manipulated by tilting and moving the device. This simple
ambient display creates a peripheral awareness of your phone’s
status over the course of a day.
Original design and concept by Mikkel Koser (http://www.mikkelkoser.com) with code by Jonas
Jongejan (http://halfdanj.dk) and Kyle Philips (http://haptic-data.com).
Open source code can be found at https://github.com/googlecreativelab/meter.
Learn more at https://www.androidexperiments.com.