Quick Booster: Deep Cleaner is a free mobile application developed by Mons Mobile for Android devices. The app falls under the category of Utilities & Tools and is designed to optimize device performance by cleaning out junk files and boosting RAM.

The user interface of Quick Booster: Deep Cleaner is straightforward and easy to navigate. The app offers a deep cleaning feature that scans the device for junk files, temporary files, and cache data. It also has a RAM booster that frees up memory space by closing background apps and services. The app claims to improve device speed and performance by up to 50%.

Overall, Quick Booster: Deep Cleaner is a useful tool for anyone looking to optimize their device's performance. It's easy to use, and the deep cleaning feature and RAM booster are effective in freeing up space and improving device speed. However, it's worth noting that the app does contain ads, which can be a bit intrusive at times.