AppYonder

Frequency Analyzer

Manfred Kuegel

4.5(188)UtilitiesAges 4+

Get it free on the App StoreOpens Apple's App Store

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About this app

Transform your device into a professional-grade audio analysis suite with industry-leading 32-bit float processing, precision calibration tools, and comprehensive visualization 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 VISUALIZATION MODES • High-resolution spectrum analyzer 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 • Synchronized video recording with audio analysis overlay • Event tracking system with timestamped notes • Playback synchronization 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 optimization • 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 meters. EULA: https://frequency-analyzer.com/terms-and-conditions/

What's new

Version 2.19.6 · Oct 30, 2026

Performance improvements

In-app purchases

The most popular purchases on the App Store.

  • Frequency Analyzer Pro AnnualSubscription · 7 days free trial$44.99 / year
  • Pro access for lifetimeConsumable$89.99
  • Frequency Analyzer Pro MonthlySubscription · 7 days free trial$4.99 / month
  • Frequency Analyzer Pro MonthlySubscription$4.99 / month
  • Frequency Analyzer Pro WeeklySubscription$2.99 / 7 days
  • Frequency Analyzer Pro AnnualSubscription · 7 days free trial$29.99 / year
  • Frequency Analyzer Pro AnnualSubscription$44.99 / year
  • Frequency Analyzer Pro WeeklySubscription · 3 days free trial$2.99 / 7 days
  • Frequency Analyzer Pro AnnualSubscription · 3 days free trial$44.99 / year
  • Frequency Analyzer Pro MonthlySubscription · 7 days free trial$3.99 / month

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