# System Designer vs Standard Detective

The clearest difference is update cadence: System Designer at monthly against Standard Detective's every 2 months. System Designer also leads on iOS requirement (15.6 vs 17.0). On price, ads, 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.

System Designer ships an update monthly, Standard Detective every 2 months. The most recent releases landed on September 18, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | System Designer | Standard Detective |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (17 ratings)](https://appshunter.io/ios/app/system-designer/id1132983280/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | — |
| Size | 7 MB | 2 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Erwan Carriou](https://appshunter.io/developer/1102494853) | [Masahiko Takahashi](https://appshunter.io/developer/1216975941) |

## What reviewers say

### System Designer

[App page](https://appshunter.io/ios/app/system-designer/id1132983280)

Design complex systems using a low-code platform that leverages UML standards. Generate code skeletons and manage components graphically. Run and test your system with dynamic type checking.

**Highlights:** UML-based system modeling, Code skeleton generation, Graphical component creation, MSON format for model definition, Dynamic type checking, Cross-device synchronization via GitHub

**Features:** macOS Compatibility

**In-app purchases:** none


### Standard Detective

[App page](https://appshunter.io/ios/app/standard-detective/id1410152839)

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

**In-app purchases:** none


## Frequently asked questions

### Is System Designer free?

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

### Is Standard Detective free?

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

### Do System Designer or Standard Detective have ads?

Neither System Designer nor Standard Detective shows ads.

### Which is updated more often, System Designer or Standard Detective?

System Designer ships an update monthly, and Standard Detective every 2 months. Most recently, System Designer was updated on September 18, 2026 and Standard Detective on August 20, 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.*