Decibel Pro: dB Sound Meter
Noise Level & SPL Meter
Only for iPhone
Free · In‑App Purchases
iPhone
New spectrum analyser. New noise dosimeter. Calibrated dBA you can trust at a gig, on the job, or in your studio. Privacy first. Nothing recorded.
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/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- 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
The developer, Cloud Motion Lab LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Cloud Motion Lab LLC
- Size
- 27.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro $3.99
- Lifetime $4.99
- Pro $29.99
- Copyright
- © 2026 Cloud Motion Lab LLC