A free program for Android, by BaronBaron.

Clean Master is a powerful and easy-to-use Android system cleaner and speed booster app. It is designed to optimize your Android device’s performance, system, and other details, such as the RAM, CPU, and disk usage, by cleaning functions.

Clean Master is an all-around solution to mobile phone jams and slow operation. It will protect your IP address, encrypt your internet traffic, turn public Wi-Fi into a private network, and help you to browse safely and anonymously.

The junk cleaner function will remove large files, similar photos, and other junk files from the device, which will help you to clean up the storage space. The battery saver function will help you to reduce the charging time and power consumption. The CPU cooler function will help you to prevent your device from overheating. The encryption function will protect all the data and communications you send and receive online – including files, emails, chats, and video calls – with super-strong encryption. The VPN function will allow you to connect to the VPN server of your choice and enjoy a fast, secure, and anonymous connection.