Decibel Meter | Sound Level
Live dB noise measuring
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Decibel Meter turns your phone into a clear, no-fuss sound level meter. Open it and measuring starts right away.
FEATURES
- Real-time dB from the microphone, refreshed every 100 ms, range 0 to 130 dB
- Arc gauge with a needle and large readout, dark theme with a neon green accent
- Live line graph of recent noise, with the 85 dB risk line marked
- Minimum, average and maximum dB plus elapsed time in one stats bar
- Six noise levels with everyday examples: leaves, a library, conversation, a vacuum cleaner, the subway, a concert
- Red banner and haptic vibration above 85 dB to protect your hearing
- Threshold alerts at 60, 70, 80, 85 or 90 dB while you are measuring
- Saved records with date, duration, min, average and max dB, noise grade, a note and labels such as home, work, cafe or street
- CSV export, and share a measurement as an image
- Spectrum visualization with 16 bars from 31 Hz to 16 kHz
- Noise guide with WHO and NIOSH safe exposure times: 60 dB unlimited, 85 dB about 8 hours, 90 dB about 2 hours
WHO IT IS FOR
Residents with noisy neighbors, students comparing study spots, parents watching the nursery, and anyone who works in a loud place.
PLEASE NOTE
This is a reference tool. Smartphone microphones vary, so readings can be off by around 5 dB, and the app is not suitable for precision acoustic measurement or as legal evidence.
PRIVACY
The microphone is used only for live dB measurement. No audio is recorded, stored or sent anywhere. Records stay on your device: no account, no server. Free, supported by ads.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Added support for more languages. The app now follows your device language.
The developer, Seonggon Sim, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Seonggon Sim
- Size
- 40.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 32 more
- English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © Copyright 2026. Gonigon all rights reserved.