If you have installed an app that helps to extend your phone battery, you may be surprised to hear that your battery is actually worse off with it than without. This is because the app constantly runs in the background, draining your phone’s battery. All the app does is close out apps you aren’t using; that’s something you can do yourself.
A better way to save battery life is to check in on your apps periodically. For example, which ones don’t you use anymore? Send them to the trash. Which do you rarely use, but they stay open in the background, draining your battery? Either trash those, too, or remember to turn them off.