7 Best Free Markdown Viewer Apps for Android in 2026 (Tested & Ranked)

Finding the best free Markdown viewer for Android in 2026 is harder than it should be. The Play Store is full of apps that promise Markdown support but deliver poor rendering, missing features, or aggressive ads.

We installed and tested every major free Markdown app available for Android to find the ones actually worth using. Here are our top 7, ranked by rendering quality, feature completeness, and overall user experience.

The Complete Comparison

1. MerMD — Best Overall Free Viewer ⭐

Best for: Reading documentation, reviewing README files, viewing Mermaid diagrams

MerMD is a dedicated Markdown viewer that prioritizes rendering quality over editing features. It’s the only free Android app that combines all of the following:

• Mermaid diagram rendering — flowcharts, sequence diagrams, Gantt charts, class diagrams, ER diagrams, pie charts, and state diagrams, all rendered natively on-device
• KaTeX math equations — inline and display LaTeX, rendered completely offline
• Syntax highlighting for 20+ programming languages with multiple color themes
• Cloud storage integration — browse GitHub repositories, GitLab projects, OneDrive, and Dropbox directly from the app
• Professional export — PDF, HTML, and high-resolution images
• Customizable reading experience — fonts, themes, reading width, table of contents navigation

Why it’s our top pick: No other free app matches MerMD’s combination of rendering quality, diagram support, and cloud integration. If your Markdown files contain Mermaid diagrams — and an increasing number of technical docs do — MerMD is the only free option that renders them properly.

Price: Free, no ads, no account required

Get it: mermd.tech

2. Markor — Best Free Editor

Best for: Writing Markdown, managing todo lists, Zettelkasten notes

Markor is the gold standard for Markdown editing on Android. It’s lightweight, open-source, and gives you full filesystem access to create and edit .md files anywhere on your device.

Strengths:

• Fast, responsive editor with customizable toolbar
• Todo.txt format support for task management
• Zettelkasten-style internal linking
• Full filesystem browser
• Open source (Apache-2.0), available on F-Droid

Weaknesses:

• No Mermaid diagram support
• No cloud storage integration (local files only)
• Rendering quality is secondary to editing features
• No image export

Best paired with: MerMD (write in Markor, review the rendered output in MerMD)

Price: Free and open source

3. Obsidian Mobile — Best for Knowledge Management

Best for: Personal knowledge bases, linked notes, heavy customization

Obsidian is the most powerful note-taking app available, and its Android version brings most of that power to mobile. If you have a vault of interconnected notes, Obsidian is unmatched.

Strengths:

• Bi-directional linking and graph view
• 1000+ community plugins
• Excellent Live Preview editor
• Mermaid diagram support
• Desktop-to-mobile sync

Weaknesses:

• Heavy app (~80 MB), slow startup
• Requires vault setup before you can read anything
• Cloud sync costs $8/month (or requires workarounds)
• No direct GitHub/GitLab repository browsing
• Steep learning curve

Price: Free for personal use; Sync ($8/mo), Publish ($8/mo)

4. PilcrowMD — Best Minimalist Reader

Best for: Clean, distraction-free reading of local .md files

PilcrowMD is a beautifully designed, open-source Markdown reader. Its serif typography and calm design make it feel more like reading a printed page than a code document.

Strengths:

• Beautiful typography and reading experience
• Clean, distraction-free interface
• Open source (GPL-3.0)
• No ads, no tracking

Weaknesses:

• No Mermaid diagram support
• No cloud storage integration
• No export options
• Limited table and code block styling
• Local files only

Price: Free and open source (F-Droid)

5. Markdot — Best Split-View Editor

Best for: Technical docs and READMEs with side-by-side preview

Markdot is a lightweight Markdown viewer and editor with a distinctive split-view layout. In landscape mode, you see your source and rendered output side by side with synchronized scrolling.

Strengths:

• Split-view with synchronized scrolling
• Automated table of contents
• PDF and HTML export
• Clean, minimal design

Weaknesses:

• No Mermaid diagram support
• No cloud storage integration
• No math equation rendering
• Local files only

Price: Free

6. MD Reader — Simplest Single-File Viewer

Best for: Opening a single .md file quickly

MD Reader is the most minimal option on this list. It does one thing: opens .md files and renders them. No frills, no configuration, no extras.

Strengths:

• Extremely simple and fast
• Opens files from any file manager via share intent

Weaknesses:

• No Mermaid, no KaTeX, no syntax highlighting
• No cloud integration
• No export
• Very basic rendering

Price: Free

7. Simple Markdown — Fastest Quick Editor

Best for: Making fast edits to .md files

Simple Markdown is an open-source, zero-bloat editor. No ads, no accounts. Open a file, edit it, preview changes.

Strengths:

• Fastest startup of any app on this list
• Open source, no tracking
• Simple and focused

Weaknesses:

• No Mermaid, no KaTeX, no syntax highlighting
• No cloud integration
• No export
• Rendering is very basic

Price: Free and open source

Which App Should You Choose?

Our Recommendation

For most users who read more than they write, MerMD is the best free Markdown viewer available for Android in 2026. It’s the only app that handles Mermaid diagrams, KaTeX math, syntax highlighting, and cloud storage in a single, free package.

If you write more than you read, start with Markor — and install MerMD alongside it for reviewing your rendered output.