Reviews of MarkChart - Mermaid Editor

By: Alexandre Colucci App

List of user reviews and ratings for MarkChart - Mermaid Editor

Total ratings

4.20 (Rating count: 13)

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Review summary

MarkChart is praised for its live Mermaid rendering, robust export options, helpful templates and docs, a clean UI, and overall good value for the price. Users also note the app is lightweight and responsive, though some mention occasional issues with file imports, background color handling, and debugging syntax errors. Overall, it delivers fast, portable Mermaid editing with convenient exports and learning aids.

Pros

Live rendering / instant preview on save
Strong export options (image export and PDFs)
Templates and links to Mermaid documentation to learn syntax
Clean, easy-to-use UI
Good value for money / pro features are worth the price

Cons

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User Reviews

Recent rating average: 3.80

All time rating average: 4.20

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7% (2)

Date	Author	Comment
2026-08-04	ME*****	I downloaded this app specifically to edit Mermaid diagrams visually. In the app store is says you can do that. On their web page it says “Edit visually With the interactive canvas.” But I don’t see anyway to do that. Google says: MarkChart and standard Mermaid tools are diagram-as-code systems. They generate layouts automatically from text, meaning you cannot freely drag and drop or manually move shapes around on the preview screen So, which is it? If you can’t then it’s pretty blatant false-advertising.
I downloaded this app specifically to edit Mermaid diagrams visually. In the app store is says you can do that. On their web page it says “Edit visually With the interactive canvas.” But I don’t see anyway to do that. Google says: MarkChart and standard Mermaid tools are diagram-as-code systems. They generate layouts automatically from text, meaning you cannot freely drag and drop or manually move shapes around on the preview screen So, which is it? If you can’t then it’s pretty blatant false-advertising.
2026-07-24	J *****	iOS user. If you like losing work, use this app! Otherwise find a different solution. Exiting with invalid syntax loses the file. Now it happened to me twice.
iOS user. If you like losing work, use this app! Otherwise find a different solution. Exiting with invalid syntax loses the file. Now it happened to me twice.
2026-06-03	Te*****	This tool works great and would be perfect with just some UX tweaks to allow zooming and dragging when using a mouse.
This tool works great and would be perfect with just some UX tweaks to allow zooming and dragging when using a mouse.
2026-05-26	Mi*****	As far as I can tell it allows you to edit the Mermaid text in one pane, and see the results in another. Not any different from editing the mermaid text in your favorite editor and then firing up a viewer in another window.
As far as I can tell it allows you to edit the Mermaid text in one pane, and see the results in another. Not any different from editing the mermaid text in your favorite editor and then firing up a viewer in another window.
2026-03-05	da*****	This is exactly the kind of tool I was looking for that allows me to write diagrams with my text editor of choice with all its features and shortcuts that I'm used to, and see the diagram rendered immediately on saving the file. It also has some nice export options for the rendered diagrams. Overall, worth the 9 bucks for the full version. My only issue so far is that it does not specify anywhere what version of the Mermaid standard it supports. The help and FAQ link to the official Mermaid site for reference on Mermaid syntax which implies it should support everything documented there, but I have noticed it doesn't support newer features such as central connections and half arrows on sequence diagrams, and it also does not support combining aliases with participant type configuration on sequence diagrams either. It would be useful if the Mermaid version the app supports was listed somewhere (such as the FAQ or Release Notes), to make it clear what features should be expected to be supported.
This is exactly the kind of tool I was looking for that allows me to write diagrams with my text editor of choice with all its features and shortcuts that I'm used to, and see the diagram rendered immediately on saving the file. It also has some nice export options for the rendered diagrams. Overall, worth the 9 bucks for the full version. My only issue so far is that it does not specify anywhere what version of the Mermaid standard it supports. The help and FAQ link to the official Mermaid site for reference on Mermaid syntax which implies it should support everything documented there, but I have noticed it doesn't support newer features such as central connections and half arrows on sequence diagrams, and it also does not support combining aliases with participant type configuration on sequence diagrams either. It would be useful if the Mermaid version the app supports was listed somewhere (such as the FAQ or Release Notes), to make it clear what features should be expected to be supported.
2026-02-17	ne*****	I wish these tools could do more. I wish I could click on anything and change its properties and colors without typing any code. To be clear, I do not want an AI prompt, I want a WYSIWYG editor. However, MarkChart gets image export, theme, and background color right. Nice looking rendered diagrams!
I wish these tools could do more. I wish I could click on anything and change its properties and colors without typing any code. To be clear, I do not want an AI prompt, I want a WYSIWYG editor. However, MarkChart gets image export, theme, and background color right. Nice looking rendered diagrams!
2026-02-10	En*****	This is a convenient implementation of mermaid.js for making charts. It includes new features such as the ELK renderer. The developer is responsive. I asked: "I don't know the official way to just bring up the editor to paste in code and then save it where you want." The response: "For now, the simplest way to create a new diagram by pasting code is to launch MarkChart on iOS, choose the Blank template, and then paste your code directly into the editor. From there, you can save it wherever you like."
This is a convenient implementation of mermaid.js for making charts. It includes new features such as the ELK renderer. The developer is responsive. I asked: "I don't know the official way to just bring up the editor to paste in code and then save it where you want." The response: "For now, the simplest way to create a new diagram by pasting code is to launch MarkChart on iOS, choose the Blank template, and then paste your code directly into the editor. From there, you can save it wherever you like."
2026-01-29	TT*****	Dead simple and nimble. No complaints.
Dead simple and nimble. No complaints.
2026-01-17	uu*****	I am pretty jazzed. I have been wanting an app like this because Mermaid is a very handy, portable, and powerful way to visually show how something should work, be in time, perform, and flow. The challenge, similar to markdown itself, is learning the syntax. This app helps you with this by providing templates that you can start with and direct links to documentation where a specific detail is needed. For someone exploring Mermaid, these features built in to the foundation of this app are valuable. I have already learned several new things thanks to this feature. The UI is clean and easy to use. For the price it is a no brainer to get.
I am pretty jazzed. I have been wanting an app like this because Mermaid is a very handy, portable, and powerful way to visually show how something should work, be in time, perform, and flow. The challenge, similar to markdown itself, is learning the syntax. This app helps you with this by providing templates that you can start with and direct links to documentation where a specific detail is needed. For someone exploring Mermaid, these features built in to the foundation of this app are valuable. I have already learned several new things thanks to this feature. The UI is clean and easy to use. For the price it is a no brainer to get.
2025-12-02	Br*****	Anytime I try to make a new file it just says cannot import file type and it won’t open any files I have saved in the cloud or on device. I’ve uninstalled multiple times.
Anytime I try to make a new file it just says cannot import file type and it won’t open any files I have saved in the cloud or on device. I’ve uninstalled multiple times.