# System Designer vs FlyGoog Agent

The clearest difference is iOS requirement: FlyGoog Agent at 13.0 against System Designer's 15.6. On price, update cadence, ads and in-app purchases 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, FlyGoog Agent fortnightly. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | System Designer | FlyGoog Agent |
| --- | --- | --- |
| 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 | **Fortnightly** |
| Monetization | Free | — |
| Size | 7 MB | 55 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Erwan Carriou](https://appshunter.io/developer/1102494853) | [Nishchal Parne](https://appshunter.io/developer/1821681349) |

## 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


### FlyGoog Agent

[App page](https://appshunter.io/ios/app/flygoog-agent/id6740404265)

**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 FlyGoog Agent free?

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

### Do System Designer or FlyGoog Agent have ads?

Neither System Designer nor FlyGoog Agent shows ads.

### Which is updated more often, System Designer or FlyGoog Agent?

System Designer ships an update monthly, and FlyGoog Agent fortnightly. Most recently, System Designer was updated on October 6, 2026 and FlyGoog Agent on October 7, 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.*