Decibel: Sound Meter

Decibel Detector is a clean, free sound level meter for iPhone. Open the app and instantly see how loud your surroundings are, in dB(A) — the same A-weighted scale used by professional sound level meters. A live ring meter and color-coded exposure bands help you understand whether you are in a quiet space or somewhere that could damage your hearing. Features • Live dB(A) readings with industry-standard A-weighting • Color-coded exposure bands from Quiet to Dangerous • 85 dB hearing-safety indicator — the level where extended exposure can begin to harm hearing • 100% on-device: audio is never recorded, stored, or sent anywhere • No ads, no in-app purchases, no account, no tracking Readings are estimates for everyday awareness and are not a substitute for a certified, professionally calibrated sound level meter.