Comparison

PureFlow vs System Designer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PureFlow

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
Read full description

PureFlow is a simple app for creating flowcharts. The interface of the app is designed specifically for editing flowcharts, which makes it possible to create fancy looking diagrams in a very short time.

About

System Designer

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
Read full description

System Designer is a low-code development platform for creating systems. No matter the frameworks you use and the code you write, the most important is the model that you define to create your system. System Designer helps you to design this model and to generate the classes and components to build your system. DESIGN YOUR SYSTEM WITH EASE If you look at the different JavaScript frameworks on the market, you will notice that they all have their own way to define a model, generally only with code. System Designer uses UML, a standard, to define your model. So you probably already know how to design in System Designer even if you have never run it. The definition of the model is stored on a JSON format called MSON. With MSON you can define types, classes, one to one / one to many relationships and multi inheritance between classes. CODE THE BEHAVIOR OF YOUR SYSTEM Once you have created your model, System Designer generates the skeletons of all your methods. You only have then to add your code to implement them. System Designer provides you helpers to manage your components. You can easily navigate threw your components to create your application. CREATE COMPONENTS GRAPHICALLY There is no need to code to instantiate a component. Create a component in System Designer is like creating a document in a NoSQL Database. In fact, System Designer acts as an ODM (Object-Document Mapper) to manage your components as NoSQL Documents. RUN YOUR SYSTEM You can run your system directly from System Designer. Because you have defined a model for your application, a Dynamic Type Check is done on every action of your system. All warnings are send and shown in System Designer. DESIGN ON THE GO System Designer can be used on macOS, iPad or any browsers. System Designer has a Github module to synchronize your work between all these apps. You can begin your design on your Mac and then continue it on your iPad.

Screenshots

System Designer3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard3 real differences · 7 level
PureFlow versus System Designer: the parameters behind the verdict, then further details
ParameterPureFlowSystem Designer
PriceFreeFree
Rating4.6 (154 ratings) — better4.4 (17 ratings)
Positive reviews84.8% of reviews — better77.8% of reviews
Number of ratings154 — better17
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad, iPod — better
Requires iOS14.0 — better15.6
Further details — not scored
Size26 MB7 MB
Age rating4+4+
DeveloperAleksandr KozlovErwan Carriou

Customer experience

PureFlow

All ratings154 ratings
Positive91.6%
Neutral3.2%
Negative5.2%
Written reviews158 reviews
Positive84.8%
Neutral5.7%
Negative9.5%

System Designer

All ratings17 ratings
Positive88.2%
Neutral0.0%
Negative11.8%
Written reviews9 reviews
Positive77.8%
Neutral0.0%
Negative22.2%

Bugs and requests

PureFlow

Reported bugs

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

Requested features

6 requests
  • 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)
Show 1 more
  • Dark mode support

System Designer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

PureFlow

No in-app purchases

None

System Designer

No in-app purchases

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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