Phone Cleaner - Booster Master is a powerful cleaning and boosting program for Android devices. It is a full version program developed by Starry Tech, designed to clean junk files, boost phone speed, cool down the CPU, manage apps, save battery, encrypt files, and clean WhatsApp data.

With its Junk Cleaner feature, the app deeply cleans junk files, residual and cache files, freeing up storage space and speeding up the device. The One Tap Boost feature helps to boost phone speed with just one tap, while the Speed Booster optimizes memory and speeds up the device. The CPU Cooler feature checks and analyzes CPU temperature, detects high resource-consuming apps, and reduces CPU usage.

The Battery Saver feature analyzes battery usage, quickly finds power-hungry applications, and optimizes battery usage to extend battery life. The App Manager helps users easily uninstall downloaded apps to free up more phone space. The File Hider feature encrypts and hides files, protecting users' privacy. Lastly, the WhatsApp Clean feature finds audios, videos, GIFs, pictures, documents generated by WhatsApp, and deletes them all of unnecessary.

Overall, Phone Cleaner - Booster Master is an excellent program for Android users who want to optimize and clean their devices efficiently.