is eliminating APK files that you've already installed. It's pretty common to download an APK, install it on your phone, and then completely forget about the APK leaving it in your download file. That's where DU Cleaner comes into play. If you don't want those extra APK files, this app completely eliminates them within seconds.
DU Cleaner is a great tool for keeping your device in tiptop shape. Also, unlike other similar apps, it takes up very little space (less than 5MB).