JuiceDefender

Over 7000000 Downloads! JuiceDefender - Battery Saver is a powerful yet easy to use power manager app specifically designed to extend the battery life of your Android device. Packed with smart functions, it automatically and transparently manages the most battery draining components, like 3G/4G connectivity and WiFi.

It's free of charge to download the .apk file of JuiceDefender and you can read users' reviews on Droid Informer. This application installation package requires 1 MB of free space on your device. According to the antivirus report, the app doesn't contain viruses or any kind of malware. Latedroid is the creator of this application which can be found in the Productivity category.

The tool was downloaded and set up by over 10M users and its most recent stable update was on Jan 15, 2012. People rated JuiceDefender 4.4 on Google Play. Samsung and LG users download the app quite often.

The way users see it, the advantages of this application are a nice UI, great performance, useful features, facebook notifications and a best battery saver. In users’ view, the tool features the following drawbacks: interface issues, annoying ads, freezes and stops and a lack of support.