I'm not sure if there is a better app for this purpose, and I'm honestly not that sure what this even does. I'm def not as tech savy as people on this board. However I this app tweeted, looked at the reviews, and got it a while ago. I'd estimate it easily gives me 35-45% more battery life and it runs in the background. I've told other people about it, and they all have seen improvements. If anyone has thoughts on this. Can explain what it actually does. Or if there is a better app that does this. Please let me know. Big fan regardless. Here's a link to it in the app store. https://play.google.com/store/apps/...DMsImNvbS5hMHNvZnQuZ3Bob25lLmFEYXRhT25PZmYiXQ..