# PureFlow vs System Designer

The clearest difference is update cadence: PureFlow at weekly against System Designer's monthly. PureFlow also leads on ratings volume (154 vs 17). System Designer's advantage is device support (3 vs 1). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PureFlow holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: PureFlow has 154 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 85% of PureFlow's written reviews are positive against 78% of System Designer's.

PureFlow ships an update weekly, System Designer monthly. The most recent releases landed on July 27, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | PureFlow | System Designer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (154 ratings)](https://appshunter.io/ios/app/pureflow/id600955222/reviews)** | [4.4 (17 ratings)](https://appshunter.io/ios/app/system-designer/id1132983280/reviews) |
| Number of ratings | **154** | 17 |
| Positive reviews | **84.8% of reviews** | 77.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free | Free |
| Size | 26 MB | 7 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Aleksandr Kozlov](https://appshunter.io/developer/600955225) | [Erwan Carriou](https://appshunter.io/developer/1102494853) |

## What reviewers say

### PureFlow

[App page](https://appshunter.io/ios/app/pureflow/id600955222)

Create professional flowcharts and diagrams with ease. Its intuitive interface is optimized for diagram editing, allowing for the rapid creation of visually appealing charts.

**Highlights:** Flowchart creation, Diagram editing, Intuitive interface, Fast diagram generation, Visually appealing charts

**In-app purchases:** none

**What reviewers like**

- 🚀 Intuitive and easy to use
- 👍 Produces clean and attractive flowcharts
- 🚀 Simple and straightforward
- 👍 Great for basic flowcharting needs
- 👍 Surprisingly powerful for a free app

**What reviewers complain about**

- 🐛 Occasional crashes or stability issues
- 🔧 Limited customization options
- 🔧 Inability to manipulate lines and arrows
- 🔧 Lack of export/sharing options without in-app purchase

**Reported bugs**

- Crashes on certain iOS versions
- Inability to save or export flowcharts
- Alignment issues with text and shapes

**Requested features**

- Ability to add images or custom shapes
- Improved text editing and formatting options
- Straight line/right angle connections
- Collaboration and real-time sharing features
- Improved export options (e.g. Dropbox, Google Drive)


### 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


## Frequently asked questions

### Is PureFlow free?

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

### Is System Designer free?

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

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

PureFlow is rated higher. PureFlow averages 4.6 out of 5 from 154 ratings, while System Designer averages 4.4 from 17 ratings.

### Do PureFlow or System Designer have ads?

Neither PureFlow nor System Designer shows ads.

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

PureFlow ships an update weekly, and System Designer monthly. Most recently, PureFlow was updated on July 27, 2026 and System Designer on September 18, 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.*