MarkChart - Mermaid Editor appears to be a legitimate app. The AppsHunter Legitimacy Score for MarkChart is 83 out of 100 points across 7 verification signals from App Store and developer data.

MarkChart Reviews: Is It Legit?

Name: MarkChart - Mermaid Editor
Rating: 4 (14 reviews)

MarkChart - Mermaid Editor

Alexandre Colucci

📊 Productivity

🛠️ Developer Tools

Customer Experience

Positive experience72.7% of reviews

Neutral6.1% of reviews

Negative experience21.2% of reviews

~ Based on 66 written reviews from the US App Store.

Is MarkChart Safe?

Not enough ratings yet to assess MarkChart.

Is MarkChart Legit?

MarkChart - Mermaid Editor appears to be a legitimate app. AppsHunter Legitimacy Score for MarkChart is 83/100.

Based on 83 of 100 points across 7 verification signals from App Store and developer data.

Top reviews

Most Recent Highest Rated Lowest Rated

Good, not great.

Amazing, does the job but doesn't feel as polished as it should be.

Rravisrav

19 days ago

Promises visual editing, but not in the app

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.

MMEWintle

2 months ago

Response from developer

Thank you for your feedback! To clarify, MarkChart does include a visual editor, but it currently focuses on visually customizing diagram elements rather than freely repositioning them. You can click nodes and connections directly in the diagram to change their shape, fill color, border color, text color, and text size. The diagram layout itself is generated automatically, so nodes cannot currently be freely dragged and dropped or manually positioned. – Alex

Very good

Amazing

NNohsbshahaha

3 months ago

Kaputt

Wenn man die App startet wird man in eine andere Umgebung weiter geleitet. Dort kann man zwar Vorlagen betrachten, diese aber nicht bearbeiten. Nicht überzeugt.

TMTrauriger Alter Mann

3 months ago

Response from developer

Vielen Dank, dass Sie sich die Zeit für Ihr Feedback genommen haben. Es tut uns leid, dass die App nicht Ihren Erwartungen entsprochen hat. Beim Start zeigt die App zunächst eine Galerie mit Beispielen, um den Einstieg zu erleichtern. Diese Vorlagen dienen nur zur Ansicht. Eigene Diagramme können Sie erstellen, indem Sie ein neues Dokument anlegen oder ein bestehendes öffnen. Falls Sie auf ein anderes Problem gestoßen sind, freuen wir uns über eine Nachricht an support@markchart.app, damit wir Ihnen weiterhelfen können. – Alex

真的是良心软件，¥38该有的全有

Obsidian的问题是手机版本太慢，这个打开挺快的，渲染也很快，随时编辑，mermaid语法。试了好几个类似软件就这一个好用的。而且还支持macOS！！！iPad iPhone三端同步，不说了，再说像个吹子了。

Aasa_song

3 months ago

Does what it says it does

I’ve purchased pro and have only been happy with it. I use it for all my mermaid diagrams, whether the other tools I use have mermaid diagrams built in or not.
This is an example of how a good, user focused, app should be written.
Not only is the app great, but the developer is extremely responsive and open to feedback.

MMuisnest

3 months ago

Unreliable

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.

JBJ Bidwell

3 months ago

업데이트 이후 느려졌어요

작성된 코드의 Redering 때문인지, 코드작성시 지연현상이 있습니다.

소소프트미누

3 months ago

Last update (8.1) broke it for me

I can’t open complex diagrams anymore after the last update. When I do (after the app passes the loading phase), I can’t export to PNG. The button is grayed out. Trying to share via AirDrop also doesn’t work. 8.0 was working fine.

Bbackslash-f

4 months ago

Response from developer

We’re sorry to hear you’ve had this experience. We’d like to better understand what went wrong so we can resolve the issue. Please feel free to reach out to us anytime at support@markchart.app – Alex

Great product

I’m enjoying Markchart, it’s simplicity of use is a plus. Full mermaid markdown language support for all diagram styles. Syntax checking and error text a great feature. One of Payment for Pro definitely worth the cost. Inline help and syntax guide extremely useful.

YYakfat

4 months ago

Almost perfect

This tool works great and would be perfect with just some UX tweaks to allow zooming and dragging when using a mouse.

TTerminaut

5 months ago

More of a Mermaid Viewer than an Editor

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.

MCMichael Czeizperger

5 months ago

Response from developer

Thank you for your feedback! The latest release goes beyond live previewing Mermaid diagrams. The new visual editor lets you customize nodes and connections directly in the diagram by simply clicking on them. You can adjust shapes, fill colors, border colors, text colors, and text sizes without editing the Mermaid code manually. – Alex

Impressed

Purchased the pro in app purchase about two months ago. Have emailed support with two feature requests and they were added. Also the dev puts out updates regularly and I’m happy it’s a once off charge and not a subscription. 5 stars. thanks

KKiz87

6 months ago

Excellent

A great tool to create all sorts of Mermaid diagrams. Fits great into Apple‘s apps. The new syntax highlighting feature is especially helpful.

Jjanucember

7 months ago

Diagrammes et organigrammes rapides

Un éditeur mermaid efficace, désormais mon éditeur du quotidien pour formaliser les organigrammes et modéliser des infrastructures.
Il y a d’autres outils pour faire du mermaid, notamment dans des éditeurs markdown, mais là on a un outil indépendant et rapide à utiliser.

GGautierMichelin

7 months ago

Great tool, though not clear what version of Mermaid it supports

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.

Ddarahalian

8 months ago

Best Mermaid Image Export

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!

NnewWaveHippo

8 months ago

Convenient implementation of mermaid.js for making charts

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."

EEntonian

8 months ago

Useless

Basicly this app is completley useless because you can write faulty Code and it renders it. Also the first thing happens is a popup where you can buy it for10€! For? Mermaid Syntax that did not work anywhere else. You can use the basic online mermaid.live Editor from web and install it via browser as an app. Works well in iOS and iPadOS

C4Carsten 456

8 months ago

Response from developer

Sorry to hear about your experience, and thanks for taking the time to share your feedback. MarkChart always aims to use the latest version of Mermaid. Some online editors may run older versions, which can lead to differences in supported syntax or features. If you ran into specific code that didn’t behave as expected, we’d really appreciate the chance to take a look and help. You can use MarkChart for free. The Pro version is optional and adds deeper integration into iOS and iPadOS, including Quick Look previews, Shortcuts integration, and PDF/SVG export. If you’d like to share more details or examples, please feel free to reach out anytime at support@markchart.app. We’re happy to help. – Alex