It uses the hardware step detection sensor of devices like the Nexus 5, which is already running even when not using any pedometer app. Therefore the app does not consume any additional battery drain.

Does pedometer drain battery?

Also be careful when you're using the Pedometer app. While it might accurately measure how many steps and what distance you walked, it does so at the cost of a nonstop power drain.

Does Iphone pedometer drain battery?

Please be aware that with Fitness Tracking disabled, your Health app, pedometer and any other fitness app will cease functioning. Tip: 1. ... This way apps won't burn additional battery juice, as they would, when you stop using them, but forget to close them completely. It prevents them from being active in the background.