# System Designer vs MindFlow

The clearest difference is in-app purchases: System Designer at none against MindFlow's 3. System Designer also leads on ads (none vs shown) and update cadence (monthly vs every 17 months). MindFlow's advantage is iOS requirement (12.0 vs 15.6). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. MindFlow sells 3 one-off in-app purchases. System Designer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.4 for System Designer against 4.4 for MindFlow. Both are backed by a comparable volume of ratings — 17 and 33 respectively. Written reviews are what separate them: 78% of System Designer's written reviews are positive against 70% of MindFlow's.

System Designer ships an update monthly, MindFlow every 17 months. The most recent releases landed on October 23, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | System Designer | MindFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (17 ratings)](https://appshunter.io/ios/app/system-designer/id1132983280/reviews) | **[4.4 (33 ratings)](https://appshunter.io/ios/app/mindflow-struct-flow-diagram/id1386620962/reviews)** |
| Number of ratings | 17 | **33** |
| Positive reviews | **77.8% of reviews** | 70.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 17 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 29 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Erwan Carriou](https://appshunter.io/developer/1102494853) | [Shenzhen Brown Bear Technology Co., LTD](https://appshunter.io/developer/480204138) |

## 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


### MindFlow

[App page](https://appshunter.io/ios/app/mindflow-struct-flow-diagram/id1386620962)

Easily create structure and flow diagrams with a simple interface. Edit branches, change shapes and themes, and export your creations. Cloud backup and sync across devices are also supported.

**Highlights:** Quick diagram building, Easy branch editing, Customizable branch shapes, Themable diagram interface, Cloud backup and sync, Export diagrams

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version (3 Months) | $2.99 | one-time |
| Pro Version for One Year | $6.99 | one-time |
| Pro Version Forever | $14.99 | one-time |


## Frequently asked questions

### Is System Designer free?

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

### Is MindFlow free?

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

### Which has better reviews, System Designer or MindFlow?

MindFlow is rated higher. System Designer averages 4.4 out of 5 from 17 ratings, while MindFlow averages 4.4 from 33 ratings.

### Do System Designer or MindFlow have ads?

MindFlow shows ads; System Designer does not.

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

System Designer ships an update monthly, and MindFlow every 17 months. Most recently, System Designer was updated on October 23, 2026 and MindFlow on November 2, 2026.

---

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