Smart Cleaner is a free utility app developed by Smart Rever for Android devices. The app is designed to clean junk files, optimize phone performance, and save battery power.

The app's interface is simple and user-friendly. It offers four main features- Clean Junk, Super Booster, Battery Saver, and Android Optimizer. The Clean Junk feature can detect and remove junk files, app cache, system cache, and uninstalled apk files, freeing up storage space on the device. The Super Booster feature analyzes memory usage and force stops memory-draining apps, freeing up RAM and making the device faster and lighter. The Battery Saver feature helps to save battery power by stopping apps that cause battery draining. Finally, the Android Optimizer feature optimizes the device and keeps it fast, light, and smart.

Overall, Smart Cleaner is a useful app for those who want to optimize their Android device's performance and save battery power. However, the app contains ads, which can be a bit annoying at times. If you're looking for a free, easy-to-use utility app to optimize your Android device, Smart Cleaner is definitely worth a try.