Frequency Meter PRO vs Audio Spectrum Analyzer Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Frequency Meter PRO
Analyze audio frequencies in real-time using your device's microphone. Visualize audio levels, noise, and frequency ranges with a spectrum analyzer and oscilloscope. Export data for further analysis.
- Real-time audio scanning
- Spectrum analyzer visualization
- Frequency oscilloscope
- Adjustable noise threshold
- Customizable frequency range
- Export data to CSV
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Frequency Meter PRO is a comprehensive tool for audio frequency diagnostics. Includes REAL TIME scanning of audio signal from internal or external microphone. *** OUTPUT *** Visualization is done on real like device that shows: - Audio level - Noise Level - Frequency range - Current frequency - Frequency oscilloscope - Spectrum analyzer *** ACCURACY *** Application is calibrated with real tone generator. Working range is around 15 - 22500 Hz, and accuracy around +/- 0.5 %. *** NOISE LIMIT *** You can easily set a limit that removes noise treshold with included trackbar. *** RANGE SELECTION *** Choose minimum and maximum frequency you want to scan. *** EXPORT *** You can export output chart to comma-separated file that you can later analyze with MS Excel or other table processor. Application shares document folder in iTunes. *** SUPPORT*** Please don't hesitate to write us for details or questions: lubomir.havran@gmail.com
Audio Spectrum Analyzer Pro
Analyze sound frequencies in real-time with this powerful tool. It offers detailed octave band analysis, FFT plots, and various measurement scales. Supports multiple microphones and noise analysis features for accurate audio insights.
- Octave Band Real Time Analyzer
- FFT Plot (Fast Fourier Transform)
- Sound level meter (dB meter)
- Noise Rating and Noise Criterion support
- Support for external microphones
- Pre-calibrated mic profiles
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Audio Spectrum Analyzer is a powerful real-time audio analysis app. Full of features yet very simple to use. Sound level meter (db meter a-weighted, noise rating, noise criterion) included. Feature Highlights: • Octave Band Real Time Analyzer • FFT Plot (Fast Fourier Transform) • Linear and logarithm scales • Up to 16384 FFT size • A lot of available window functions • Tracking for max value • Max and Min for any selected frequency • Stunned graphics • Reliable measurement accuracy with pre-calibrated profiles for 3 device-integrated mics • Additional precision with integrated support and pre-calibrated profiles for AirPods, AirPods Pro • Safer measurements using the Airpods Pro noise cancellation feature • Support for external microphones (wired or via Bluetooth) • Noise Rating and Noise Criterion support And many many more... Terms of Use: https://www.iubenda.com/terms-and-conditions/94359518
Screenshots
Verdict
The clearest difference is price: Audio Spectrum Analyzer Pro at Free against Frequency Meter PRO's $2.99. Audio Spectrum Analyzer Pro also leads on review sentiment (57% vs 15%) and rating (4.4 vs 1.8). Frequency Meter PRO's advantage is in-app purchases (none vs 2) and iOS requirement (8.0 vs 13.0). On 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
Audio Spectrum Analyzer Pro is free to download; Frequency Meter PRO costs $2.99 up front. Audio Spectrum Analyzer Pro sells 2 in-app purchases, starting at $19.99 per year. Frequency Meter PRO asks for nothing beyond the download.
Audio Spectrum Analyzer Pro holds the better App Store score, 4.4 against 1.8. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer Pro has 238 ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 15% of Frequency Meter PRO's written reviews are positive against 57% of Audio Spectrum Analyzer Pro's.
Frequency Meter PRO ships an update every 4 months, Audio Spectrum Analyzer Pro every 7 months. Both last shipped on September 24, 2026.
| Parameter | Frequency Meter PRO | Audio Spectrum Analyzer Pro |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 1.8 (30 ratings) | 4.4 (238 ratings) — better |
| Positive reviews | 14.7% of reviews | 57.4% of reviews — better |
| Number of ratings | 30 | 238 — better |
| Update frequency | Every 4 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 3 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Lubomir Havran BINARTS | Vlad Polyanskiy |
Customer experience
Frequency Meter PRO
Audio Spectrum Analyzer Pro
User reviews
Frequency Meter PRO
From 30 App Store ratingsWhat we love
- ✨ Identifies frequency quickly
- 💡 Can filter sound frequencies
- 💡 Detects harmonics
- 💡 Useful for ultrasonic devices
- 💡 Can be used to tune instruments
Room to improve
- ❌ Inaccurate readings
- ❌ Not a reliable frequency meter
- ❌ Fake, toy, not a frequency meter
- ❌ Useless for tuning
- ❌ Waste of money
Audio Spectrum Analyzer Pro
From 238 App Store ratingsWhat we love
- 👍 Intuitive and easy-to-use interface
- 💰 Completely free with no ads
- 🎯 Accurate frequency and spectrum analysis
- 📊 Multiple visualization modes (FFT, spectrograph, bar display)
- 🔧 Professional-grade audio measurement tool
Room to improve
- 💸 Aggressive subscription/paywall nags
- 🔄 Frequent iOS compatibility issues after updates
- 📉 Features moved behind paywall in recent updates
- 🐛 App crashes on startup (especially iOS 16/26)
- ⚠️ Misleading free trial that requires payment
Bugs and requests
Frequency Meter PRO
Reported bugs
25 issues- Sticks on a reading
- Below C4 indicates wrong notes
- Frequency range indicated when NOISE indicator is ON
- Fails to change output when tone changes
- Works only if shut down and restarted
Show 20 moreShow fewer
- App crashes on open
- App worked only once, now nothing happens
- Crashes ever since the update
- Crashing at the push of a button
- Meter freezes
- Locks up after 3-5 seconds
- Buttons don't work
- App closes when buttons are pressed
- Cannot download
- Ne fonctionne pas sur iPad mini, pas d accès au micro
- Threshold sliders don't work as expected
- App doesn't read frequency and gives out odd numbers
- Barely works
- Crashes frequently
- Doesn't work on anything but a pure sine wave
- Fails to work on current iOS version
- Freezes every time I use it
- Does not work at all
- Random numbers displayed
- Sometimes determines frequency well, other times completely wrong
Requested features
15 requests- Include a short/simple manual
- Explain how to find CSV file in iTunes
- Update with accuracy fix
- Allow measurement of frequencies above 20kHz
- Add help function for operation
Show 10 moreShow fewer
- Improve display readability
- Add option to filter background noise
- Allow selection of recording intervals
- Add real-time display of all main frequencies
- Allow filtering of frequencies in a certain range
- Include instructions in updates
- Increase size of data presentation screen
- Support for iPhone 5 resolution
- More control over frequency filtering
- Dark mode option
Audio Spectrum Analyzer Pro
Reported bugs
11 issues- App crashes on iOS 16 and iOS 26 launches
- FFT resolution not working after iOS updates
- Graph display freezes or becomes unresponsive
- Spectrograph mode too slow on newer iPhones
- Frequency alignment issues with dynamic display
Show 6 moreShow fewer
- App won't uninstall properly
- Malware warnings appearing
- Help links and support pages broken/dead
- Incorrect dB level readings (off by ~20dB)
- Recording functions non-functional
- Half black screen in certain orientations
Requested features
11 requests- Audio file upload capability
- White noise/test signal generator
- Microphone calibration file support
- Recording functionality with timestamp
- Multiple frequency cursors for comparison
Show 6 moreShow fewer
- Ability to compare before/after curves
- Adjustable dB level zoom/scaling
- Saved settings and personalizations
- Audio Unit (AUV3) plugin support
- Peak hold reset button
- Time-domain recording in spectrograph mode
In-app purchases
Frequency Meter PRO
No in-app purchases
Audio Spectrum Analyzer Pro
- Premium Mode7 Days trial$19.991 Year
- Premium Pack$29.99
Questions
Is Frequency Meter PRO free?
Is Audio Spectrum Analyzer Pro free?
Which has better reviews, Frequency Meter PRO or Audio Spectrum Analyzer Pro?
Do Frequency Meter PRO or Audio Spectrum Analyzer Pro have ads?
Which is updated more often, Frequency Meter PRO or Audio Spectrum Analyzer Pro?
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