# radioCREEP vs Simple PDF Assistant

The clearest difference is ads: radioCREEP at none against Simple PDF Assistant's shown. Simple PDF Assistant's advantage is update cadence (every 4 days vs every 7 months) and iOS requirement (15.0 vs 18.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

radioCREEP ships an update every 7 months, Simple PDF Assistant every 4 days. Both last shipped on October 1, 2026.

## The numbers

| Metric | radioCREEP | Simple PDF Assistant |
| --- | --- | --- |
| 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 | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 1 MB | 8 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Devin Coleman](https://appshunter.io/developer/1806754304) | [Ut Nguyen Thi Bach](https://appshunter.io/developer/6780327646) |

## What reviewers say

### 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


### Simple PDF Assistant

[App page](https://appshunter.io/ios/app/simple-pdf-assistant/id6782833303)

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

**In-app purchases:** none


## Frequently asked questions

### Is radioCREEP free?

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

### Is Simple PDF Assistant free?

Simple PDF Assistant is free to download, with no in-app purchases.

### Do radioCREEP or Simple PDF Assistant have ads?

Simple PDF Assistant shows ads; radioCREEP does not.

### Which is updated more often, radioCREEP or Simple PDF Assistant?

radioCREEP ships an update every 7 months, and Simple PDF Assistant every 4 days. Most recently, radioCREEP was updated on October 1, 2026 and Simple PDF Assistant 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.*