Decibel Meter Master is a free iPhone app developed by Yanhui Feng. It falls under the category of Utilities & Tools and serves as a sound level meter, allowing users to measure noise levels.

With Decibel Meter Master, your iPhone transforms into a reliable tool for measuring sound intensity. Whether you want to assess the noise level in your surroundings or monitor the sound output of a specific source, this app provides accurate measurements. Simply launch the app, and it will display the current noise level in decibels.

The app's user-friendly interface makes it accessible to both professionals and casual users. It offers a clear visual representation of the noise level, allowing you to easily interpret the readings. Decibel Meter Master is an essential tool for anyone needing to measure noise levels with their iPhone.