
"Sound Level Analyzer" has received the highest rating as a sound level meter app in the research paper of acoustic academic journal "Applied Acoustics".
”Testing the accuracy of smartphones and sound level meter applications for measuring environmental noise”, Enda Murphy, Eoin A. King ; Applied Acoustics 106(2016)16-22.
This paper reports on experimental tests undertaken to assess the capability of noise monitoring applications to be utilized as an alternative low cost solution to traditional noise monitoring using a sound level meter. This research has been tested 100 smartphones in a reverberation room.
The results suggest that apps written for the iOS platform are superior to those running on the Android platform. They show that one of the apps tested "Sound Level Analyzer (SLA)" is within ±1 dB of true noise levels across four different reference conditions. In this paper, the app name is described as "SLA Lite".