Carat

Carat is an app that helps you considerably improve your Android battery's performance - but not by closing the apps you have running in the background, cleaning the smartphone's cache, or killing processes. Instead, it offers a better solution to the problem.

The way Carat works is simple. Open the app once a day for several days and send information about your battery to its servers. In than one week, you'll receive a personalized analysis with a series of recommendations on how to improve your battery's life.

It's important to keep in mind that Carat doesn't store private information on its users. On the app's official site, you can check that your anonymity and privacy are guaranteed.

Carat is an interesting app for saving your battery life. Instead of recommending quick fixes (killing processes, deleting apps, etc.), it helps you find a more long-term solution.