Sound Noise Meter+ dB SPL

WHO/OSHA dosimeter + verdict

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Point the mic. Live dB, min/avg/max and a graph. See if that room is a whisper or a subway. 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. Using your device's built-in microphone, the app captures audio and calculates sound pressure levels with professional accuracy. The beautifully designed radial gauge displays readings from 0 to 120 dB, with color-coded zones (green for safe, yellow for moderate, red for hazardous) so you can instantly assess your noise environment. Key Features: • Real-time decibel measurement (0-120 dB SPL) • Animated radial gauge with color-coded noise levels • Live sound waveform chart with continuous monitoring • Min, Average, and Max dB tracking per session • Calibration adjustment (±20 dB) for precision tuning • 12 noise level descriptions with reference examples • One-tap recording with pause and reset controls • 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.

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Store screens now show the live dB meter in 30 languages — min/avg/max, calibration and everyday examples from rain to subway. Dutch, Danish, Finnish, Czech and Hebrew pages added.

Version 3.2.29

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

Privacy practices may vary based, for example, on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Provider
  • Kyu-Hee Jang
Size
  • 62.4 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.
Languages
  • English
Age Rating
18+
Copyright
  • © simon jang
  • Developer Website
  • Privacy Policy

    • More by Kyu-Hee Jang

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