Sound Noise Meter+ dB SPL
WHO/OSHA dosimeter + verdict
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Professional sound level meter with dBA/dBC, dose and TWA. Now saves sessions with LAeq, Lmax, L10, L90 statistics and CSV export.
Sound Noise Meter+ is a professional-grade sound level meter with built-in OSHA/NIOSH 8-hour noise dose tracking, A/C/Z weighting, and one-tap Quiet Room calibration. No hardware required — just your iPhone.
The radial gauge displays live dB SPL from 0 to 120, color-coded green / yellow / red so you can read your environment at a glance. Switch to the Dose Panel to watch your 8-hour TWA build in real time, with separate OSHA (90 dBA / 5 dB exchange) and NIOSH (85 dBA / 3 dB exchange) accumulators.
Key Features:
• Real-time decibel measurement (0–120 dB SPL)
• OSHA + NIOSH 8-hour noise dose tracking with TWA
• A / C / Z weighting toggle (dBA · dBC · dBZ)
• Quiet Room one-tap calibration (3-second auto-cal)
• Animated radial gauge with color-coded noise levels
• Live waveform chart with continuous monitoring
• Min, Average, and Max dB tracking per session
• Manual calibration adjustment (±20 dB) for precision tuning
• 12 noise level descriptions with reference examples
• Dark theme interface optimized for any environment
Perfect For:
• Checking workplace noise levels for OSHA compliance
• Monitoring neighborhood and traffic noise
• Measuring music venue and concert sound levels
• Assessing classroom or office noise environments
• Testing speaker and audio equipment output
• Environmental noise surveys and studies
The app features an intuitive dark interface with a professional radial gauge that animates smoothly as sound levels change. Track minimum, average, and maximum readings to understand noise patterns over time. The built-in calibration tool lets you fine-tune measurements for your specific device.
Your privacy matters — all audio processing happens locally on your device. No recordings are stored or transmitted. Sound Noise Meter respects your privacy completely.
Ratings & Reviews
Save your measurements as sessions. Each recording now keeps LAeq, Lmax, L10, and L90 statistics so you can review real sound-exposure data, and you can export any session to CSV to share or analyze later.
The developer, Kyu-Hee Jang, 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
- Kyu-Hee Jang
- Size
- 61.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 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
- Age Rating
18+
- 18+
- Contains
Advertising
- Copyright
- © simon jang