Decibel & Frequency Meter

Spectrum Analyzer - Noise - dB

Only for iPhone

Free · In-App Purchases · Designed for iPhone

iPhone

Professional audio analysis suite with real-time FFT, dB/SPL measurements, multiple visualisations, high-precision recording, playback and extensive export features. Transform your device into a professional-grade audio analysis suite with industry-leading 32-bit float processing, precision calibration tools, and comprehensive visualisation capabilities. PROFESSIONAL ACOUSTIC MEASUREMENT • Real-time FFT analysis with configurable window sizes up to 4096 points • Reference SPL measurement with calibrated sound pressure level monitoring • Professional microphone correction with frequency-specific calibration curves • Reference tone calibration for precise frequency measurements • Configurable time averaging (0-1000ms) for stable, accurate readings • Industry-standard weighting filters: dBA, dBC, dBZ, and linear magnitude • Multiple window functions: Hanning, Hamming, Blackman ADVANCED VISUALISATION MODES • High-resolution spectrum analyser with peak detection • Real-time waveform display • Professional spectrogram • Octave band analysis • Amplitude tracking over time • Total level monitoring with min/max/average statistics POWERFUL RECORDING & ANALYSIS • High-quality 32-bit float audio recording and playback • Synchronised video recording with audio analysis overlay • Event tracking system with timestamped notes • Playback synchronisation with all recorded events and measurements • Location mapping for environmental noise surveys • Export capabilities: WAV audio, CSV data, high-resolution images and videos PRECISION DECIBEL MEASUREMENT • Calibrated SPL measurements with reference level adjustment • Real-time dB monitoring with peak hold functionality • Statistical analysis: Leq, Lmax • Configurable time averaging (0-1000ms) • Frequency-weighted noise exposure calculations • Exposure calculator for NIOSH and OSHA IDEAL FOR PROFESSIONALS • Acousticians and audio engineers • Environmental noise consultants • Musicians and sound designers • Room acoustics optimisation • Industrial noise monitoring • Educational and research applications • Live sound reinforcement • Building acoustics assessment Download now and unlock the full spectrum of acoustic measurement capabilities. DISCLAIMER This is a consumer application designed for general audio analysis and educational purposes. It is not a certified measurement instrument and should not be used where legally compliant or certified measurements are required. For professional acoustic assessments requiring traceable calibration or regulatory compliance, we recommend using an external calibrated measurement microphone with certified sound level metres. EULA: https://frequency-analyzer.com/terms-and-conditions/

  • 5.0
    out of 5
    1 Ratings

Performance improvements

The developer, Manfred Kuegel, 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 Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data
    • Diagnostics

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

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

  • Seller
    • Manfred Kuegel
  • Size
    • 83.2 MB
  • Category
    • Utilities
  • Compatibility
    Requires iOS 17.2 or later.
    • iPhone
      Requires iOS 17.2 or later.
    • Mac
      Requires macOS 14.2 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.1 or later.
  • Languages
    English and 12 more
    • English, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Simplified Chinese, Spanish, Swedish, Traditional Chinese
  • Age Rating
    4+
  • In-App Purchases
    Yes
    • Pro access for lifetime USD 89.99
    • Frequency Analyzer Pro Weekly USD 2.99
    • Frequency Analyzer Pro Monthly USD 6.99
    • Frequency Analyzer Pro Monthly USD 6.99
    • Frequency Analyzer Pro Annual USD 29.99
    • Frequency Analyzer Pro Annual USD 29.99
    • Frequency Analyzer Pro Monthly USD 4.99
    • Frequency Analyzer Pro Annual USD 44.99
    • Frequency Analyzer Pro Annual USD 44.99
    • Frequency Analyzer Pro Monthly USD 4.99
  • Copyright
    • © 2025 Manfred Kuegel