About this app

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/

Latest release

What’s New

Version 1.4 Jun 4, 2026

- New spectrum analyser with 1/1 and 1/3 octave bands - New noise dosimeter with NIOSH and OSHA exposure calculations - A, C, and Z weighting curves with one-tap calibration workflow

Audience growth

Ratings growth

Steady

7-day gain +0

Ratings / day 0.0

30-day gain +0

US rating-count history

0 ratings

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking