# SimpleFFT vs radioCREEP

The clearest difference is in-app purchases: radioCREEP at none against SimpleFFT's 1. radioCREEP also leads on ads (none vs shown) and update cadence (every 7 months vs every 18 months). SimpleFFT's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.6). On price there is nothing between them.

Both are free to download. SimpleFFT sells 1 one-off in-app purchase. radioCREEP asks for nothing beyond the download.

SimpleFFT ships an update every 18 months, radioCREEP every 7 months. The most recent releases landed on October 10, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | SimpleFFT | radioCREEP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/radiocreep/id6756237336/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 7 months** |
| Monetization | — | Free |
| Size | 5 MB | 1 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HIROFUMI MARUO](https://appshunter.io/developer/667820705) | [Devin Coleman](https://appshunter.io/developer/1806754304) |

## 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 |


### radioCREEP

[App page](https://appshunter.io/ios/app/radiocreep/id6756237336)

Transform your iPhone into a professional acoustic analysis tool. Record audio and instantly generate signal processing metrics like RMS loudness dynamics and frequency fingerprints. Ideal for researchers, audio engineers, and students seeking deep insights into sound.

**Highlights:** Real-time audio recording and analysis, Loudness dynamics (RMS profile), Acoustic stability score, Frequency fingerprint (Average FFT), Up to 90 seconds of recording

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SimpleFFT free?

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

### Is radioCREEP free?

radioCREEP is free to download, with no in-app purchases.

### Do SimpleFFT or radioCREEP have ads?

SimpleFFT shows ads; radioCREEP does not.

### Which is updated more often, SimpleFFT or radioCREEP?

SimpleFFT ships an update every 18 months, and radioCREEP every 7 months. Most recently, SimpleFFT was updated on October 10, 2026 and radioCREEP on October 1, 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.*