Decibel Meter dB: Sound Level

See how loud your world really is.

Decibel Pro turns your iPhone into a clean, color-coded sound meter. The animated gauge moves with the room. Quiet zones glow green. Conversation zones turn yellow. Anything that could damage your hearing pushes hard into red. You see the danger before you feel it.

Built for people who care about real numbers. Live dBA readings update in real time. The waveform shows you the spike that just happened. Min, average, and maximum stats hold steady so you can compare a quiet bedroom to a loud cafe to a construction site without losing the moment.

FEATURES
Real-time dBA sound level meter
Animated gauge with color-coded noise zones
Live waveform of the last few seconds
Min, average, maximum, and duration stats
Built-in noise reference guide (whisper, traffic, jet engine)
Calibration support for your specific iPhone microphone
Dark mode optimized for late-night listening sessions
Frequency and SPL readings for the enthusiasts

PERFECT FOR
Workplace noise checks at the office, gym, or shared workspace
Concerts, clubs, and live events where your hearing is on the line
Home appliance comparisons when something starts sounding wrong
Hearing health monitoring with NIOSH and OSHA style readings
Musicians, audio engineers, and anyone tuning a room
Settling arguments about whose music is too loud

PRIVACY FIRST
Audio is analyzed on your device in real time. Nothing is recorded. Nothing is uploaded. The sound never leaves your iPhone.

Open the app. See the number. Know what it means.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/