DecibelLab: Sound Level Meter

Spectrum·Dose·Hearing Guard

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Pro sound level meter, ref. IEC 61672. Real-time dB monitoring, FFT spectrum analysis, NIOSH/OSHA noise dosimetry. Export PDF reports, protect your hearing. DecibelLab is a professional-grade noise measurement and analysis tool that turns your iPhone into a portable sound level meter. Whether you're an audio engineer, a construction safety supervisor, or an everyday user concerned about hearing health, DecibelLab provides precise noise data. ◆ REAL-TIME DECIBEL MEASUREMENT • 0-130 dB wide-range detection with real-time response • dBA / dBC / dBZ three frequency weightings • Slow / Fast / Ultra-fast response modes • Five visualizations: Waveform, Bar Chart, Gauge, Heatmap, Radar ◆ FFT SPECTRUM ANALYSIS • Octave / 1/3 Octave / FFT three display modes • Real-time dominant frequency identification and musical note display • Peak hold function ◆ NOISE DOSIMETER • NIOSH (85dB/3dB) and OSHA (90dB/5dB) dual standards • NC/NR spectrum-based environmental acoustic rating • TWA time-weighted average and 8-hour dose percentage • Real-time hearing protection risk assessment ◆ INSTADECIBEL CAMERA • Real-time decibel data overlaid on camera feed • Capture photos and videos with measurements burned into output • Front/rear camera switching with auto-focus ◆ PROFESSIONAL REPORT EXPORT • PDF detailed report (with timeline, distribution chart, configuration info) • PNG high-resolution screenshot (social sharing) • CSV raw data (Excel / Numbers analysis) ◆ NOISE ALERTS & PROTECTION • Custom dB threshold alerts (vibration + flash + push notification) • Auto-trigger recording 10 seconds before and after • Decibel reference guide (0-140 dB noise level descriptions) ◆ MORE FEATURES • Recording history management with audio playback • GPS location tagging for measurements • Dark / Light theme • Background continuous monitoring • 21 languages supported Reference Standards: IEC 61672 / ANSI S1.4 Data Security: All measurement data is stored only on your device Terms of Use: https://tootoostudio.github.io/decibellab-legal/terms-of-use.html Privacy Policy: https://tootoostudio.github.io/decibellab-legal/privacy-policy.html

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

• Background continuous monitoring support • Various bug fixes

Version 1.0.1

The developer, 永芳 徐, 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.

    Privacy practices may vary, for example, based 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

    Seller
    • 永芳 徐
    Size
    • 15.7 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.0 or later.
    Languages
    English and 20 more
    • English, Arabic, Dutch, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Malay, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © YongFang Xu
  • Privacy Policy

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