Over 10M users downloaded and installed Avast Battery Saver and its latest release was on Jun 1, 2018. Keep in mind the important moment: ads are a part of this application and it offers in-app purchases. A number of users installed the app on their Samsung and LG devices.
A free .apk file of Avast Battery Saver 2.7.0 can be downloaded from Droid Informer and you can check out users' reviews on this site. Prepare 11 MB of free space on your device for this app setup package.
The way users see it, there are some advantages, they are a clean UI, useful features, awesome performance, facebook notifications, automatic updates and a best battery saver. As users state, you can find such drawbacks of the app as minor bugs and full-screen ads.