# Frequency Meter PRO vs Spectrum Analyzer

The clearest difference is price: Spectrum Analyzer at Free against Frequency Meter PRO's $2.99. Spectrum Analyzer also leads on rating (4.2 vs 1.8) and update cadence (fortnightly vs every 4 months). Frequency Meter PRO's advantage is in-app purchases (none vs 13) and ads (none vs shown). On device support there is nothing between them.

Spectrum Analyzer is free to download; Frequency Meter PRO costs $2.99 up front. Spectrum Analyzer sells 13 in-app purchases, starting at $4.99 per 7 days. Frequency Meter PRO asks for nothing beyond the download.

Spectrum Analyzer holds the better App Store score, 4.2 against 1.8. That said, the two scores are not equally well evidenced: Spectrum Analyzer has 197 ratings behind it against 30, so its average is the more settled of the two. Written reviews complicate that: 15% of Frequency Meter PRO's written reviews are positive against 5% of Spectrum Analyzer's, so the app with the better star average is not the one people write more warmly about.

Frequency Meter PRO ships an update every 4 months, Spectrum Analyzer fortnightly. Both last shipped on September 24, 2026.

## The numbers

| Metric | Frequency Meter PRO | Spectrum Analyzer |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [1.8 (30 ratings)](https://appshunter.io/ios/app/frequency-meter-pro/id559840622/reviews) | **[4.2 (197 ratings)](https://appshunter.io/ios/app/spectrum-analyzer-spectrogram/id981810895/reviews)** |
| Number of ratings | 30 | **197** |
| Positive reviews | **14.7% of reviews** | 5.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Paid | **Freemium** |
| Size | 3 MB | 132 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lubomir Havran BINARTS](https://appshunter.io/developer/557200855) | [Music Breath](https://appshunter.io/developer/1140008995) |

## 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


### Spectrum Analyzer

[App page](https://appshunter.io/ios/app/spectrum-analyzer-spectrogram/id981810895)

Visualize audio frequencies with real-time analysis. Features include a sound level meter, multichannel harmonic analysis, and adjustable graphical representations. Gain insights into your sound environment with advanced tools.

**Highlights:** Sound level meter, Multichannel harmonic analysis, Adjustable graphics, AI-powered sound source analyzer, Real-time analysis, FFT analysis

**Features:** macOS Compatibility

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pitch Finder: Audio Visualizer | $4.99 | per 7 days |
| Pitch Finder: Audio Visualizer | $9.99 | per month |
| One Month Sale | $9.99 | per month |
| 1 Week Subscription | $9.99 | per 7 days |
| 1 Year Sub. with discount | $19.99 | per year |
| 1 Month Subscription | $19.99 | per month |
| 3 Month Subscription | $25.99 | per 3 months |
| 1 Year Subscription | $39.99 | per year |
| 2 months subscription | $39.99 | per 2 months |
| No Ads | $9.99 | one-time |
| Additional Settings Controls | $15.99 | one-time |
| Full Pack + No Ads | $19.99 | one-time |
| Get More | $19.99 | one-time |

**What reviewers like**

- ✅ Accurate frequency identification
- ✅ Clear and easy-to-read display
- ✅ Useful noise floor setup feature
- ✅ Works well when ads are removed

**What reviewers complain about**

- 💰 Extremely aggressive monetization strategy
- 📢 Excessive and intrusive ads
- 🔊 Loud ads that ignore device mute settings
- 🚫 Requires subscription/payment to access core features
- 😤 Deceptive purchase practices and accidental charges

**Reported bugs**

- App becomes unusable after iOS 16 update
- Crashes immediately on iPhone 5 with iOS 7
- Cannot exit app on iPhone X without reboot
- App freezes when changing settings or views
- Inaccurate frequency readings

**Requested features**

- Audio file import functionality
- Customizable background colors for chroma key compatibility
- Ability to record audio instead of only analyzing
- Better documentation and help files
- Improved sensitivity for detecting soft sounds


## Frequently asked questions

### Is Frequency Meter PRO free?

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

### Is Spectrum Analyzer free?

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

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

Spectrum Analyzer is rated higher. Frequency Meter PRO averages 1.8 out of 5 from 30 ratings, while Spectrum Analyzer averages 4.2 from 197 ratings.

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

Spectrum Analyzer shows ads; Frequency Meter PRO does not.

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

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