Speaker Tester & Cleaner is a free Android app developed by appsRock in the category of Multimedia, specifically Music & Radio. The app is designed to test the quality and performance of your phone's internal and external speakers. It offers two different modes of testing: Manual and Automatic. The app generates simple sine wave frequencies that allow you to analyze the quality of any kind of speakers, internal or external. In addition, the app boosts the volume of your phone's speaker by clearing the audio memory.

The app is very easy to use and provides a simple UI/UX for the users. The manual testing mode allows you to perform testing on your speaker at different frequencies. The automatic testing mode, on the other hand, checks the quality of your phone's speaker or music system automatically and displays the result in the form of a rating. However, the results may vary depending on the location and background noise. It is recommended to test the speaker in a silent environment for accurate results.

Overall, Speaker Tester & Cleaner is a great app for those who want to enhance the quality of their phone's speaker volume. Just keep in mind that playing high-frequency sounds at high volume can damage your ears as well as speakers. Therefore, it is important to read the "How To Use" section before using the app.