Sound meter : SPL & dB meter
KTW Apps
Decibel X - Pro Sound Meter
SkyPaw Co., Ltd
Sound Meter
Coolexp
Splend Apps
Sound Meter Decibel
Sweetvrn
KUCO Apps
Sound Meter HQ PRO
Just4Fun Utilities
Pony Inc.
Sound Meter - Decibel
melon soft
Sound Meter - Noise Meter
Peace