Comparison

Frequency Analyzer vs SDRFE Spectrum Analyser

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Frequency Analyzer

Transform your device into a professional audio analysis tool with advanced FFT analysis, SPL monitoring, and detailed visualizations. Record, analyze, and export audio data with precision calibration and multiple weighting filters.

Highlights
  • Real-time FFT analysis
  • Calibrated SPL measurements
  • 32-bit float audio recording
  • Synchronized video recording
  • Spectrogram and octave band analysis
  • Export WAV, CSV, images, and videos
Features
Read full description

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/

About

SDRFE Spectrum Analyser

Features
Read full description

Real-time RF spectrum analyser application for SDRFE hardware platforms.

Screenshots

Frequency Analyzer4 screens
SDRFE Spectrum Analyser1 screens

Verdict

The call

The clearest difference is in-app purchases: SDRFE Spectrum Analyser at none against Frequency Analyzer's 11. On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Frequency Analyzer sells 11 in-app purchases, starting at $2.99 per 7 days. SDRFE Spectrum Analyser asks for nothing beyond the download.

UpkeepUpdate frequency

Frequency Analyzer ships an update every 8 days, SDRFE Spectrum Analyser every 9 days. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 9 level
Frequency Analyzer versus SDRFE Spectrum Analyser: the parameters behind the verdict, then further details
ParameterFrequency AnalyzerSDRFE Spectrum Analyser
PriceFreeFree
Rating4.5 (181 ratings) — better—
Positive reviews10.0% of reviews—
Number of ratings181 — better—
Update frequencyEvery 8 days — betterEvery 9 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS17.2 — better18.6
Further details — not scored
Size35 MB4 MB
Age rating4+4+
DeveloperManfred KuegelXionLogic Limited

In-app purchases

11 purchases

Frequency Analyzer

Subscriptions10
  • Frequency Analyzer Pro Weekly3 Days trial$2.997 Days
  • Frequency Analyzer Pro Monthly7 Days trial$3.991 Month
  • Frequency Analyzer Pro Monthly$3.991 Month
Show 7 more
  • Frequency Analyzer Pro Monthly7 Days trial$4.991 Month
  • Frequency Analyzer Pro Monthly$4.991 Month
  • Frequency Analyzer Pro Monthly3 Days trial$4.991 Month
  • Frequency Analyzer Pro Annual7 Days trial$29.991 Year
  • Frequency Analyzer Pro Annual7 Days trial$44.991 Year
  • Frequency Analyzer Pro Annual$44.991 Year
  • Frequency Analyzer Pro Annual3 Days trial$44.991 Year
One-time1
  • Pro access for lifetime$89.99
None

SDRFE Spectrum Analyser

No in-app purchases

Questions

Is Frequency Analyzer free?
Frequency Analyzer is free to download, with in-app purchases available.
Is SDRFE Spectrum Analyser free?
SDRFE Spectrum Analyser is free to download, with no in-app purchases.
Do Frequency Analyzer or SDRFE Spectrum Analyser have ads?
Neither Frequency Analyzer nor SDRFE Spectrum Analyser shows ads.
Which is updated more often, Frequency Analyzer or SDRFE Spectrum Analyser?
Frequency Analyzer ships an update every 8 days, and SDRFE Spectrum Analyser every 9 days. Most recently, Frequency Analyzer was updated on October 24, 2026 and SDRFE Spectrum Analyser on October 15, 2026.

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