Pacer Cleaner - Booster Master is a free Android application developed by Yacht Studio. It is a utility and tool application that helps users clean up junk files and test wifi conditions. The app is designed to improve the performance of the user's phone by freeing up space and providing a network environment test.

The application offers a one-click option to clear cache and temporary files, which helps users to free up space on their phones. Pacer Cleaner also provides a continuous network testing suite, which enables users to test their phone and understand their wifi condition. With Pacer Cleaner, users can easily optimize their phone's performance and ensure it runs smoothly.