Sound Meter is a free Android application developed by KHTSXR, which allows you to measure the noise in your surroundings. The app is designed to help you protect your hearing and health by measuring the sound pressure level (SPL) in decibels (dB), the unit of measurement for sound.

The app is easy to use and provides accurate readings, but the results may vary depending on the recording parameters of your smartphone. Some phones may give different sensor readings based on the hardware used by the manufacturer. Therefore, the app does not guarantee perfect efficiency, result, or effectiveness.

It is important to note that Sound Meter is not suitable for use in an excessively noisy environment, and the developer warns users to protect their hearing and health by avoiding exposure to loud noises. Overall, Sound Meter is a useful tool for anyone who wants to monitor the noise levels in their surroundings and take steps to protect their hearing.