System Designer vs The Meridian
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- UML-based system modeling
- Code skeleton generation
- Graphical component creation
- MSON format for model definition
- Dynamic type checking
- Cross-device synchronization via GitHub
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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.
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.
- Capture thoughts instantly
- Add notes, links, and context
- Connected workspace for projects
- Visual idea exploration (Observatory)
- Powerful search functionality (Index)
- Private or shared workspaces
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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.
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Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | System Designer | The Meridian |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (17 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 77.8% of reviews | — |
| Number of ratings | 17 — better | 2 |
| Update frequency | Monthly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 7 MB | 6 MB |
| Age rating | 4+ | 17+ |
| Developer | Erwan Carriou | CNTRL Studios LLC |
Customer experience
System Designer
The Meridian
In-app purchases
System Designer
No in-app purchases
The Meridian
No in-app purchases
Questions
Is System Designer free?
Is The Meridian free?
Which has better reviews, System Designer or The Meridian?
Do System Designer or The Meridian have ads?
Which is updated more often, System Designer or The Meridian?
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