# Frequency Meter PRO vs Audio Spectrum Analyzer Pro

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.

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.

## The numbers

| Metric | Frequency Meter PRO | Audio Spectrum Analyzer Pro |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [1.8 (30 ratings)](https://appshunter.io/ios/app/frequency-meter-pro/id559840622/reviews) | **[4.4 (238 ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806/reviews)** |
| Number of ratings | 30 | **238** |
| Positive reviews | 14.7% of reviews | **57.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 40 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lubomir Havran BINARTS](https://appshunter.io/developer/557200855) | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) |

## What reviewers say

### Frequency Meter PRO

[App page](https://appshunter.io/ios/app/frequency-meter-pro/id559840622)

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.

**Highlights:** Real-time audio scanning, Spectrum analyzer visualization, Frequency oscilloscope, Adjustable noise threshold, Customizable frequency range, Export data to CSV

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ✨ Identifies frequency quickly
- 💡 Can filter sound frequencies
- 💡 Detects harmonics
- 💡 Useful for ultrasonic devices
- 💡 Can be used to tune instruments

**What reviewers complain about**

- ❌ Inaccurate readings
- ❌ Not a reliable frequency meter
- ❌ Fake, toy, not a frequency meter
- ❌ Useless for tuning
- ❌ Waste of money

**Reported bugs**

- 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

**Requested features**

- 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


### Audio Spectrum Analyzer Pro

[App page](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Mode | $19.99 | per year |
| Premium Pack | $29.99 | one-time |

**What reviewers like**

- 👍 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

**What reviewers complain about**

- 💸 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

**Reported bugs**

- 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

**Requested features**

- Audio file upload capability
- White noise/test signal generator
- Microphone calibration file support
- Recording functionality with timestamp
- Multiple frequency cursors for comparison


## Frequently asked questions

### Is Frequency Meter PRO free?

Frequency Meter PRO costs $2.99, with no in-app purchases.

### Is Audio Spectrum Analyzer Pro free?

Audio Spectrum Analyzer Pro is free to download, with in-app purchases available.

### Which has better reviews, Frequency Meter PRO or Audio Spectrum Analyzer Pro?

Audio Spectrum Analyzer Pro is rated higher. Frequency Meter PRO averages 1.8 out of 5 from 30 ratings, while Audio Spectrum Analyzer Pro averages 4.4 from 238 ratings.

### Do Frequency Meter PRO or Audio Spectrum Analyzer Pro have ads?

Neither Frequency Meter PRO nor Audio Spectrum Analyzer Pro shows ads.

### Which is updated more often, Frequency Meter PRO or Audio Spectrum Analyzer Pro?

Frequency Meter PRO ships an update every 4 months, and Audio Spectrum Analyzer Pro every 7 months. Most recently, Frequency Meter PRO was updated on September 24, 2026 and Audio Spectrum Analyzer Pro on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*