Keep Clean - File Master is a free productivity application designed for Android users to enhance device performance and manage files effectively. The app offers a comprehensive suite of tools, including junk file removal, which scans for and eliminates unnecessary files such as app caches, ad caches, and obsolete APKs, ensuring that your device runs smoothly without clutter. Additionally, the app features an app privacy lock, allowing users to set a PIN to restrict access to specific applications, thereby enhancing privacy and security.

In addition to its cleaning capabilities, Keep Clean serves as a robust file manager, enabling users to organize their storage efficiently. It includes functionalities for reviewing and managing photos, videos, and documents, as well as tools for detecting large and duplicate files. The application also provides various utilities, including device information, battery statistics, and network data usage, offering users a detailed overview of their device's performance and security.