# Radioactivity vs RockDetect AI

The clearest difference is price: RockDetect AI at Free against Radioactivity's $0.99. RockDetect AI also leads on update cadence (weekly vs every 36 months) and device support (3 vs 1). Radioactivity's advantage is in-app purchases (none vs 3). On ads and iOS requirement there is nothing between them.

RockDetect AI is free to download; Radioactivity costs $0.99 up front. RockDetect AI sells 3 in-app purchases, starting at $2.99 per 7 days. Radioactivity asks for nothing beyond the download.

Radioactivity ships an update every 36 months, RockDetect AI weekly. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Radioactivity | RockDetect AI |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 36 months | **Weekly** |
| Size | 52 MB | 40 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [www.ajaxmediatech.com](https://appshunter.io/developer/973768003) | [ibrahim yavuz](https://appshunter.io/developer/1856505680) |

## What reviewers say

### Radioactivity

[App page](https://appshunter.io/ios/app/radioactivity-physics/id1136130171)

**Features:** macOS Compatibility

**In-app purchases:** none


### RockDetect AI

[App page](https://appshunter.io/ios/app/rockdetect-ai/id6756938481)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RockDetect AI Weekly Subscription | $2.99 | per 7 days |
| RockDetect AI Monthly Subscription | $5.99 | per month |
| RockDetect AI Yearly Subscription | $15.99 | per year |


## Frequently asked questions

### Is Radioactivity free?

Radioactivity costs $0.99, with no in-app purchases.

### Is RockDetect AI free?

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

### Do Radioactivity or RockDetect AI have ads?

Neither Radioactivity nor RockDetect AI shows ads.

### Which is updated more often, Radioactivity or RockDetect AI?

Radioactivity ships an update every 36 months, and RockDetect AI weekly. Most recently, Radioactivity was updated on October 3, 2026 and RockDetect AI 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.*