NoiseGuard - Noise Meter
Sound level & daily dose
Free · Designed for iPad. Not verified for macOS.
NoiseGuard is a sound level meter that keeps a running total of the noise you take in. Most dB meter apps show you the level right now and nothing else. NoiseGuard also adds up today's exposure, so you can see how much of your day's quiet you have already spent.
HOW THE DOSE WORKS
The daily dose follows the widely used 85 dB for 8 hours reference with a 3 dB exchange rate: every extra 3 dB halves the time you can spend there. 85 dB for 8 hours, 88 dB for 4 hours, 91 dB for 2 hours, and so on. While you are measuring, time spent at or above 85 dB piles up as a percentage of that daily allowance, and the card changes color as you climb: Safe, Caution, and Over the daily guide.
FEATURES
- Live dB readout with a scrolling bar meter
- Session minimum, average and maximum
- Today's noise dose as a percentage, with a progress bar and a 50 percent mark
- Three bands: Safe, Caution, Over the daily guide, each with a short piece of advice
- Time spent above 85 dB, counted to the second
- Home Screen widget showing today's dose at a glance
- An About sheet that explains the calculation and the limits in plain words
- No account and no sign-in needed
WHO IT'S FOR
- Band and orchestra players, and anyone who rehearses in a loud room
- Live venues, clubs and the people who work in them
- Building sites, workshops and factory floors
- Parents wondering how loud a place really is
- Anyone who wants to look after their hearing
PRIVACY
Audio is analyzed on your device and is never recorded, stored or sent anywhere. Your dose percentage is saved on this device so the widget can show it.
PLEASE READ
NoiseGuard is not a calibrated measuring instrument. The iPhone microphone has no certified sensitivity, and the reading changes with your case, the direction you point the phone and the wind, so every number is a rough guide. It is not a medical device and not an occupational-safety instrument, and it makes no claim of compliance with any regulation or standard. The counter only runs while the app is open and measuring, so it always under-reports the noise in your whole day. If you are worried about your hearing, please see a specialist.
Open NoiseGuard and see how loud your day really is.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Now fully supports iPad, with a layout designed for the larger screen. You can now change ad privacy settings from the About screen.
The developer, MIZOU, CO., LTD., 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:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- MIZOU, CO., LTD.
- Size
- 5 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 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
9+
- 9+
- Contains
Advertising
Health or Wellness Topics
- Copyright
- © 2026 Mizou Co., Ltd.