# Frequency Meter PRO vs Audio / Spectrum Analyzer

The clearest difference is review sentiment: Audio / Spectrum Analyzer at 79% against Frequency Meter PRO's 15%. Audio / Spectrum Analyzer also leads on price (Free vs $2.99) and rating (4.6 vs 1.8). Frequency Meter PRO's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Audio / Spectrum Analyzer is free to download; Frequency Meter PRO costs $2.99 up front. Audio / Spectrum Analyzer sells 1 one-off in-app purchase. Frequency Meter PRO asks for nothing beyond the download.

Audio / Spectrum Analyzer holds the better App Store score, 4.6 against 1.8. That said, the two scores are not equally well evidenced: Audio / Spectrum Analyzer has 1K 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 79% of Audio / Spectrum Analyzer's.

Frequency Meter PRO ships an update every 4 months, Audio / Spectrum Analyzer every 2 weeks. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Frequency Meter PRO | Audio / Spectrum Analyzer |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [1.8 (30 ratings)](https://appshunter.io/ios/app/frequency-meter-pro/id559840622/reviews) | **[4.6 (1K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574/reviews)** |
| Number of ratings | 30 | **1K** |
| Positive reviews | 14.7% of reviews | **78.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 5 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lubomir Havran BINARTS](https://appshunter.io/developer/557200855) | [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366) |

## 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

[App page](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574)

This application analyzes audio input from your microphone, displaying both the waveform and amplitude spectrum in real-time. It offers extensive customization for display, calculation, and signal generation.

**Highlights:** Simultaneous waveform and spectrum display, Configurable display layouts, Selectable FFT size and averaging, Frequency weighting options (Flat, dBA, dBC), Octave band analysis, Audio signal and noise generation, Peak hold and pitch meter

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Remove ads, High-Res analysis) | $11.49 | one-time |

**What reviewers like**

- 👍 Customizable features
- ⚙️ Accurate measurements
- 🚀 Helpful for troubleshooting
- 💡 Useful for ghost hunting

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔋 High battery and CPU usage
- 🚫 Inappropriate ads/content
- 🔒 Security concerns with payment info

**Reported bugs**

- Stuck on latest measurement
- White noise instead of expected functionality
- Disconnects AirPods

**Requested features**

- Sampling rate adjustment
- Wave shape tracking
- Audio file analysis
- Octave analysis


## Frequently asked questions

### Is Frequency Meter PRO free?

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

### Is Audio / Spectrum Analyzer free?

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

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

Audio / Spectrum Analyzer is rated higher. Frequency Meter PRO averages 1.8 out of 5 from 30 ratings, while Audio / Spectrum Analyzer averages 4.6 from 1K ratings.

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

Audio / Spectrum Analyzer shows ads; Frequency Meter PRO does not.

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

Frequency Meter PRO ships an update every 4 months, and Audio / Spectrum Analyzer every 2 weeks. Most recently, Frequency Meter PRO was updated on September 24, 2026 and Audio / Spectrum Analyzer on September 25, 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.*