MermaidEditor vs Markdown Editor and Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MermaidEditor
Create and edit diagrams and charts using mermaid-js syntax with real-time preview. Export your creations as PNG or SVG files and share them across all your Apple devices.
- Mermaid-js syntax highlighting
- Code completion
- Instant preview
- Export to PNG/SVG
- Cross-device editing
- QuickLook preview extension
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MermaidEditor is a diagram and chart editor, powered by mermaid-js. And MermaidEditor supports iPhone, iPad and Mac, with one app you can edit diagram everywhere on any device. MermaidEditor supports mermaid-js syntax highlighting and code completion, so it can help writing diagram and chart clearly, easily and quickly. You can also easily export charts as PNG images or SVG files from the editor, or share image to other people with system actions. √ All Platforms - Both Mobile and Desktop platforms supported, you can edit diagram documents on iPhone, iPad or Mac - Document browser based app, easily edit files on device and sync document between devices - Multiple windows ready, it makes the editor more powerful on iPadOS - Keyboard shortcuts ready on iPadOS with keyboard connected √ Powerful Editor - Syntax Highlighting for mermaid-js grammar - Auto Completion in editor helps typing keywords quickly - Code Snippets likes parallel block in sequence diagram makes life easier - Instant Parsing Error indicator for locating syntax error √ Instant Preview - Auto Generated Preview when typing in editor - Zoom and Pan to move preview for checking diagram's detail - With Scroll wheel it can be easily zoom diagram on macOS √ Integrated Extensions - Thumbnail support, every .mmd file will has its own thumbnail when saving file - QuickLook Preview extension helps you preview mermaid document in Files app on iPhone or iPad and Finder on macOS √ Sharing - Save diagram document as its source with .mmd extension - Export diagram to PNG image or SVG file with one click For mermaid-js grammar, please visit https://mermaid-js.github.io/mermaid/ for documentation.
Markdown Editor and Reader
Easily create, edit, and preview Markdown files on your mobile device. Import existing .md files and share them with others directly from the app.
- Create Markdown files
- Edit existing .md files
- Preview Markdown content
- Import .md files
- Share files
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Create Markdown files or import exiting .md files and preview them directly in the App and share the files with other people.
Screenshots
Verdict
The clearest difference is price: Markdown Editor and Reader at Free against MermaidEditor's $3.99. MermaidEditor's advantage is rating (2.3 vs 1.0) and chart position (#115 vs unranked). On review sentiment, update cadence, ads and in-app purchases 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
Markdown Editor and Reader is free to download; MermaidEditor costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MermaidEditor holds the better App Store score, 2.3 against 1.0. That said, the two scores are not equally well evidenced: MermaidEditor has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 14% of MermaidEditor's written reviews are positive against 18% of Markdown Editor and Reader's, so the app with the better star average is not the one people write more warmly about.
MermaidEditor ships an update every 3 weeks, Markdown Editor and Reader fortnightly. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.
| Parameter | MermaidEditor | Markdown Editor and Reader |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 2.3 (10 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 13.8% of reviews | 18.2% of reviews — better |
| Number of ratings | 10 — better | 2 |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #115 — better | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 14.0 |
| Further details — not scored | ||
| Size | 125 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | 基伟 徐 | Julian Lau |
Customer experience
MermaidEditor
Markdown Editor and Reader
In-app purchases
MermaidEditor
No in-app purchases
Markdown Editor and Reader
No in-app purchases
Questions
Is MermaidEditor free?
Is Markdown Editor and Reader free?
Which has better reviews, MermaidEditor or Markdown Editor and Reader?
Do MermaidEditor or Markdown Editor and Reader have ads?
Which is updated more often, MermaidEditor or Markdown Editor and Reader?
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