Try to remove all balls and clear the field.
This download is completely safe. This application is designed by Aleksey Taranov and its category is Puzzle Games. People rated the app 3.5 on Google Play.
The developer rolled out a new version of the game on Aug 11, 2018 and over 50K users downloaded and set up Smart Balls. There are advertisements in this application. It's free to get the installer of Smart Balls, also, you can check out users' reviews on Droid Informer. The app works fine on Android 2.3 and above.