Ultra Booster is a free utility and tool application developed by Eva Ultra Studio for Android users. It offers four main features, including Junk Cleaner, Phone Booster, CPU Cooler, and Battery Saver.

The Junk Cleaner feature allows users to free up storage space by removing cache, residual files, and download folders. With its powerful analytics engine, it can quickly analyze and clean up unnecessary files, giving users more storage space.

The Phone Booster feature helps to optimize the phone's performance by freeing up memory and making it lighter and faster. It is a great tool to reduce the excessive use of memory, which can slow down the phone.

The CPU Cooler feature is designed to intelligently detect and close battery-draining apps, which can reduce CPU usage and lower the phone's temperature. This feature is particularly useful for those who use their phones for extended periods.

Lastly, the Battery Saver feature analyzes the battery usage status and helps users find battery-draining apps automatically. It can stop these apps efficiently and extend the battery life of the phone.

Overall, Ultra Booster is a comprehensive tool for Android users who want to optimize their phones' performance. It is easy to use and efficient in freeing up storage space, reducing memory usage, lowering the phone's temperature, and extending battery life.