# System Designer vs Siftl

The clearest difference is update cadence: Siftl at every 3 days against System Designer's monthly. System Designer's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price, 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, Siftl every 3 days. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | System Designer | Siftl |
| --- | --- | --- |
| 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 3 days** |
| Monetization | Free | — |
| Size | 7 MB | 7 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Erwan Carriou](https://appshunter.io/developer/1102494853) | [Qubera](https://appshunter.io/developer/1887841214) |

## 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


### Siftl

[App page](https://appshunter.io/ios/app/siftl-save-anything/id6802737505)

**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 Siftl free?

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

### Do System Designer or Siftl have ads?

Neither System Designer nor Siftl shows ads.

### Which is updated more often, System Designer or Siftl?

System Designer ships an update monthly, and Siftl every 3 days. Most recently, System Designer was updated on October 6, 2026 and Siftl on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*