# SimpleFFT vs Sound Spectrum Analysis

The clearest difference is ads: Sound Spectrum Analysis at none against SimpleFFT's shown. Sound Spectrum Analysis also leads on update cadence (every 5 weeks vs every 18 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. SimpleFFT sells 1 one-off in-app purchase and Sound Spectrum Analysis sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

SimpleFFT ships an update every 18 months, Sound Spectrum Analysis every 5 weeks. The most recent releases landed on October 10, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | SimpleFFT | Sound Spectrum Analysis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.6 (42 ratings)](https://appshunter.io/ios/app/sound-spectrum-analysis/id1434975523/reviews)** |
| Number of ratings | — | **42** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 5 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HIROFUMI MARUO](https://appshunter.io/developer/667820705) | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) |

## 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 |


### Sound Spectrum Analysis

[App page](https://appshunter.io/ios/app/sound-spectrum-analysis/id1434975523)

Analyze sound spectrums in real-time using your device's microphone. This tool offers detailed frequency and amplitude scales, various window functions, and octave band analysis. It can also function as a noise level meter and allows for data export and saving of measurements.

**Highlights:** Real-time sound spectrum analysis, Fast Fourier Transform (FFT) with adjustable size, Linear and logarithmic frequency/amplitude scales, Octave band analysis (1/1, 1/3, 1/6, 1/12), Multiple window functions, A- and C-Weightings, Sound level meter (dB SPL)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $2.99 | one-time |


## Frequently asked questions

### Is SimpleFFT free?

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

### Is Sound Spectrum Analysis free?

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

### Do SimpleFFT or Sound Spectrum Analysis have ads?

SimpleFFT shows ads; Sound Spectrum Analysis does not.

### Which is updated more often, SimpleFFT or Sound Spectrum Analysis?

SimpleFFT ships an update every 18 months, and Sound Spectrum Analysis every 5 weeks. Most recently, SimpleFFT was updated on October 10, 2026 and Sound Spectrum Analysis on October 22, 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.*