# SimpleFFT vs Frequency Analyzer

The clearest difference is ads: Frequency Analyzer at none against SimpleFFT's shown. Frequency Analyzer also leads on update cadence (every 8 days vs every 18 months). SimpleFFT's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.2). On price and in-app purchases there is nothing between them.

Both are free to download. SimpleFFT sells 1 one-off in-app purchase and Frequency Analyzer sells 11 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

SimpleFFT ships an update every 18 months, Frequency Analyzer every 8 days. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | SimpleFFT | Frequency Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (169 ratings)](https://appshunter.io/ios/app/frequency-analyzer/id6468837339/reviews)** |
| Number of ratings | — | **169** |
| Positive reviews | — | 10.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 8 days** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 35 MB |
| Requires iOS | **15.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HIROFUMI MARUO](https://appshunter.io/developer/667820705) | [Manfred Kuegel](https://appshunter.io/developer/1520736594) |

## What reviewers say

### SimpleFFT

[App page](https://appshunter.io/ios/app/simplefft/id1239257017)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Functions | $0.49 | one-time |


### 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 |


## Frequently asked questions

### Is SimpleFFT free?

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

### Is Frequency Analyzer free?

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

### Do SimpleFFT or Frequency Analyzer have ads?

SimpleFFT shows ads; Frequency Analyzer does not.

### Which is updated more often, SimpleFFT or Frequency Analyzer?

SimpleFFT ships an update every 18 months, and Frequency Analyzer every 8 days. Most recently, SimpleFFT was updated on October 10, 2026 and Frequency Analyzer on October 13, 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.*