You can measure how noisy an environment is. As other similar apps it uses AVAudioRecorder component to record audio. AVAudioRecorder returns two time varying values: average and peak sound level for each one-second time period. Based on these values, app calculates a total average, total peak values. The two total values describe how noisy an environment was since recording started. Recording will take place maximum for 60 seconds. With app you can track how noisy condominiums or public spaces are.