Comparison

System Designer vs The Meridian

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

Head to head
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.

About

The Meridian

Capture and organize thoughts, notes, links, and context in a connected workspace. Discover connections between ideas with visual tools and powerful search. Create private or shared spaces for projects, coursework, and everyday inspiration.

Highlights
  • Capture thoughts instantly
  • Add notes, links, and context
  • Connected workspace for projects
  • Visual idea exploration (Observatory)
  • Powerful search functionality (Index)
  • Private or shared workspaces
Features
Read full description

Your ideas don’t always fit in one category. The Meridian gives them room to grow—and a way to find them again. Capture a thought before it disappears, then add notes, links, and context when you’re ready. Keep projects, coursework, reading, and everyday ideas in one connected workspace. Use the Observatory to see what’s on your mind, and the Index to search across everything you’ve saved. Create spaces that suit the way you work, keep a Meridian private, or share a workspace with others. The Meridian is built for students, writers, researchers, planners, and anyone with more than one thing on their mind. Capture the thought. Follow the connection. Find your way back.

Screenshots

System Designer3 screens
The Meridian4 screens

Verdict

The call

The clearest difference is rating: The Meridian at 5.0 against System Designer's 4.4. The Meridian also leads on update cadence (every 5 days vs monthly). System Designer's advantage is ratings volume (17 vs 2) and iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and monetization model 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

The Meridian holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: System Designer has 17 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

System Designer ships an update monthly, The Meridian every 5 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
System Designer versus The Meridian: the parameters behind the verdict, then further details
ParameterSystem DesignerThe Meridian
PriceFreeFree
Rating4.4 (17 ratings)5.0 (2 ratings) — better
Positive reviews77.8% of reviews—
Number of ratings17 — better2
Update frequencyMonthlyEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.6 — better17.0
Further details — not scored
Size7 MB6 MB
Age rating4+17+
DeveloperErwan CarriouCNTRL Studios LLC

Customer experience

System Designer

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

The Meridian

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

System Designer

No in-app purchases

None

The Meridian

No in-app purchases

Questions

Is System Designer free?
System Designer is free to download, with no in-app purchases.
Is The Meridian free?
The Meridian is free to download, with no in-app purchases.
Which has better reviews, System Designer or The Meridian?
The Meridian is rated higher. System Designer averages 4.4 out of 5 from 17 ratings, while The Meridian averages 5.0 from 2 ratings.
Do System Designer or The Meridian have ads?
Neither System Designer nor The Meridian shows ads.
Which is updated more often, System Designer or The Meridian?
System Designer ships an update monthly, and The Meridian every 5 days. Most recently, System Designer was updated on November 2, 2026 and The Meridian on October 31, 2026.

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