Sound Meter - Simple Detector is a free iPhone app developed by GWI JU JO. It falls under the category of Utilities & Tools, specifically a sound meter app. This app allows users to measure sound levels and provides a simple and easy-to-use interface.

The main features of Sound Meter - Simple Detector include the ability to show decibels, calibration, a graph display, and a history log. Users can easily measure the level of noise around them and understand the corresponding decibel range. The app provides a range of noise levels from very quiet (20 dB) to unbearable (120 dB), allowing users to gauge the intensity of the sound.

Overall, Sound Meter - Simple Detector is an interesting and useful app for anyone who wants to measure sound levels. It provides a straightforward interface and essential features for monitoring noise levels in various environments.