# Frequency Analyzer vs SDRFE Spectrum Analyser

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.

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.

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.

## The numbers

| Metric | Frequency Analyzer | SDRFE Spectrum Analyser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (181 ratings)](https://appshunter.io/ios/app/frequency-analyzer/id6468837339/reviews)** | — |
| Number of ratings | **181** | — |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 9 days |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 4 MB |
| Requires iOS | **17.2** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Manfred Kuegel](https://appshunter.io/developer/1520736594) | [XionLogic Limited](https://appshunter.io/developer/1855294139) |

## What reviewers say

### Frequency Analyzer

[App page](https://appshunter.io/ios/app/frequency-analyzer/id6468837339)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Frequency Analyzer Pro Weekly | $2.99 | per 7 days |
| Frequency Analyzer Pro Monthly | $3.99 | per month |
| Frequency Analyzer Pro Monthly | $3.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Annual | $29.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Pro access for lifetime | $89.99 | one-time |


### SDRFE Spectrum Analyser

[App page](https://appshunter.io/ios/app/sdrfe-spectrum-analyser/id6758634671)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


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