Dexa: UML Class Diagrams

Dexa: UML Class Diagrams

Design & Visualize UML Graphs

0 ratings
1 review
Free
In-App Purchases

Details

Released
June 11, 2026
Updated
October 28, 2026

Features

Dexa: UML Class Diagrams screenshot #1 for iPhone
Dexa: UML Class Diagrams screenshot #2 for iPhone
Dexa: UML Class Diagrams screenshot #3 for iPhone
Dexa: UML Class Diagrams screenshot #4 for iPhone
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About

Create and visualize UML class diagrams on Apple devices. Design visually on a canvas or use PlantUML/Mermaid code. Supports various relationship types and exports high-resolution diagrams with a Pro upgrade.

✓Visual canvas editor
✓PlantUML and Mermaid support
✓Six relationship types
✓Auto layout with saved positions
✓Screen mirroring to TV
✓Export to PNG/PDF (Pro)
✓iCloud synchronization
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What's New in Dexa

27.1

October 28, 2026

• Present on TV: show just your diagram on an Apple TV while you edit. • Your layout stays put when you reopen a diagram. • Class names with spaces now work in PlantUML and Mermaid.

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Subscriptions & In-App Purchases

$3.99

Dexa Pro

Unlock diagram export and source code editor

User reviews

Pretty Good

It’s pretty nice and helpful for project ideas. One thing I do not like is that when you reopen the application, it automatically aligns the cards in a line A-Z. I have a structure that I like and I don’t like it how the app rearranges it, can throw me off a bit.

Response from developer

Thanks for your review! I appreciated your idea, and in the new version you can select auto layout or assign classes where you prefer; the file will retain the position for the next time. I hope you enjoy the update!

Developer apps

FAQ

What is Dexa used for?

Dexa is a UML class diagram editor designed for developers, students, and software architects. It allows users to visually build diagrams on an interactive canvas or by writing code in PlantUML or Mermaid formats.

What devices does Dexa support?

Dexa is made for every Apple device, including iPhone, iPad, Mac, and Apple Vision Pro. Diagrams are saved as iCloud documents, ensuring they sync across all your devices.

Can I export my diagrams from Dexa?

Yes, you can export diagrams as high-resolution PNG or PDF files. This feature is unlocked with Dexa Pro, which is a one-time purchase.

What are the benefits of Dexa Pro?

Dexa Pro is a one-time purchase that unlocks the ability to export diagrams in high-resolution PNG or PDF formats. It also grants access to the source code editor for PlantUML and Mermaid.

Does Dexa have ads?

No, Dexa is completely ad-free. The app also does not track users or collect any data, ensuring a private user experience.

How does the auto-layout feature work in Dexa?

The auto-layout feature arranges your classes in clean, hierarchical layers whenever you request it. Importantly, the positions you manually choose are saved within the file, so your diagram will open exactly as you last left it.

What relationship types are supported in Dexa?

Dexa supports six essential relationship types for UML class diagrams: inheritance, realization, association, aggregation, composition, and dependency. These are drawn using the correct UML arrow styles.

Is Dexa suitable for beginners?

Yes, Dexa is suitable for beginners as well as experienced professionals. Its visual canvas editor makes it easy to start designing diagrams, while the PlantUML and Mermaid support caters to those who prefer a code-based approach.