File Master - File Manager is a free and easy-to-use file explorer for Android devices. Developed by T3infotech, it has a simple and user-friendly interface that allows you to explore your files and applications with ease. The app is based on Google's Material Design guidelines, which makes it look modern and visually appealing.

One of the most impressive features of File Master is its ability to work on multiple tabs at the same time. This allows you to compare and work on different tasks simultaneously. The app also features an FTP server that lets you share and access files across different devices connected to the same network.

In addition to basic file operations like copy, paste, delete, and compress, the app also offers advanced features like root explorer for advanced users. You can access system files, edit, delete, and encrypt files as per your requirement. The app also has multiple themes with cool icons, including Material dark, Material light, Day time, and Black (OLED). You can choose the theme that suits your preference.

Overall, File Master - File Manager is a great option for managing your files and folders on your Android device. If you're looking for a lightweight and smooth file explorer with advanced features, this app is definitely worth checking out.