Focus Noise Meter - dB Sound Level
It never records audio, only calculates dB levels, and your history stays on your phone. Free on Android.
All apps / Focus Noise Meter / Guides
Legal limits for neighbor noise and how to document it, why phone dB apps differ from sound level meters and how to calibrate, quiet library seats, the cafe-noise creativity study, baby white noise volume, workplace noise limits, and checking a home office or a new apartment for noise.
It never records audio, only calculates dB levels, and your history stays on your phone. Free on Android.