# Dev Detect vs System Rx

The clearest difference is in-app purchases: System Rx at none against Dev Detect's 2. System Rx also leads on device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Dev Detect sells 2 in-app purchases, starting at $4.99 per 7 days. System Rx asks for nothing beyond the download.

## The numbers

| Metric | Dev Detect | System Rx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 4 MB | 2 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [HONG KONG JIAOLAN CO. LIMITED](https://appshunter.io/developer/1719522154) | [Mohamed Saud](https://appshunter.io/developer/1797283594) |

## What reviewers say

### Dev Detect

[App page](https://appshunter.io/ios/app/dev-detect-cpu-master/id6758431919)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Power | $4.99 | per 7 days |
| Yearly Power | $39.99 | per year |


### System Rx

[App page](https://appshunter.io/ios/app/system-rx/id6761538119)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Dev Detect free?

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

### Is System Rx free?

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

### Do Dev Detect or System Rx have ads?

Neither Dev Detect nor System Rx shows ads.

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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.*