Obsidian vs Notion vs Plain Markdown: Which is Best for Notes?

The note-taking world is divided into three camps: Obsidian users who love local-first Markdown, Notion users who love databases and collaboration, and plain Markdown purists who just want text files. Each approach has genuine strengths — and real trade-offs.

This comparison helps you decide which fits your workflow.

The Three Approaches at a Glance

Obsidian: The Power User’s Choice

What It Is

Obsidian is a Markdown-based knowledge management app that stores everything as local .md files on your device. Its killer feature is bi-directional linking — connect notes together to build a knowledge graph.

Strengths

Local-first architecture. Your notes are plain Markdown files stored on your computer. No account required, no server dependency, no data hostage.

Graph view. Visualize connections between your notes as an interactive network graph. See how ideas relate to each other.

Plugin ecosystem. 1000+ community plugins add features like Kanban boards, daily notes, spaced repetition, and more.

Bi-directional links. Type [[Note Name]] to link to another note. Obsidian automatically tracks backlinks — see every note that references the current one.

Weaknesses

No real-time collaboration. Obsidian is designed for solo use. Sharing notes requires third-party sync and has no simultaneous editing.

Mobile app is slower. The Android/iOS apps work but feel heavier than the desktop version. Large vaults can lag.

Sync costs money. Obsidian Sync ($8/month) is the official cloud sync solution. You can use Google Drive or Dropbox instead, but conflict resolution is manual.

Plugin dependency. Many essential features (math, diagrams, advanced tables) require community plugins that may break with updates.

Best For

• Developers building a personal knowledge base
• Researchers who need to connect ideas across hundreds of notes
• Writers who want a distraction-free, local-first experience

Notion: The Team Player

What It Is

Notion is an all-in-one workspace that combines notes, databases, wikis, and project management. It uses a block-based editor with a proprietary format (not Markdown, despite appearances).

Strengths

Real-time collaboration. Multiple people can edit the same page simultaneously. Perfect for team wikis, shared documentation, and project planning.

Databases. Create structured data with filters, sorts, views (table, board, gallery, calendar, timeline). Nothing else matches Notion’s database flexibility.

Templates. Rich template gallery with pre-built systems for project management, meeting notes, habit tracking, and more.

Polished UI. Beautiful, intuitive interface that non-technical users can learn quickly.

Weaknesses

No offline reliability. Despite claiming “offline mode,” Notion frequently requires connectivity. Pages can fail to load without internet.

Vendor lock-in. Your data lives on Notion’s servers in a proprietary format. Export options exist but are lossy — you’ll lose databases, toggles, and page relationships.

Performance issues. Large workspaces become slow. Page load times increase as your workspace grows. Search can be sluggish.

Not actually Markdown. Notion’s editor looks like Markdown but uses a proprietary block format. You can’t open Notion pages in a text editor.

Pricing scales up. Free tier has limitations. Teams need the $10/user/month plan. Costs add up fast for organizations.

Best For

• Teams that need shared documentation and project management
• Non-technical users who want a visual, intuitive note-taking experience
• Project managers who need databases, boards, and timelines

Plain Markdown: The Purist’s Path

What It Is

Just .md text files. Write them in any text editor (VS Code, Vim, Notepad++, Typora), store them anywhere (local, cloud, Git), read them in any Markdown viewer.

Strengths

Total freedom. No app dependency, no account, no subscription. Your notes work in any text editor on any platform, forever.

Blazing fast. Plain text files open instantly. No loading screens, no database queries, no server round-trips.

Perfect version control. Store notes in Git and get full change history, branching, and collaboration through pull requests.

Universal compatibility. Markdown is supported by GitHub, GitLab, Stack Overflow, Reddit, Discord, Slack, and thousands of apps.

Zero cost. No subscriptions, no freemium limitations, no “upgrade to unlock” features.

Tiny file sizes. A year of daily notes might total 5 MB. Your entire knowledge base fits on any device.

Weaknesses

No built-in linking. Standard Markdown doesn’t have [[wiki-links]]. You can use relative file links, but there’s no automatic backlink tracking.

No collaboration. Sharing requires manual file exchange or Git (which has a learning curve for non-developers).

Editor fragmentation. There’s no single “best” Markdown editor. You’ll need to choose and configure one.

No databases. If you need structured data with filters and views, Markdown tables are limited compared to Notion databases.

Best For

• Developers who live in the terminal and use Git
• Anyone who values long-term data portability above all else
• Minimalists who want zero friction between thought and note

Head-to-Head Comparisons

For STEM Students

Winner: Plain Markdown + MerMD — best math and diagram support, fully offline, zero cost.

For Software Teams

Winner: Depends — Notion for non-technical teams, Plain Markdown (in Git) for developer teams.

For Personal Knowledge Management

Winner: Obsidian — graph view and bi-directional links are uniquely powerful for PKM.

The Hybrid Approach

Many people combine tools:

1. Write in Obsidian or VS Code on desktop
2. Sync via Google Drive, OneDrive, or Dropbox
3. Read on Android with MerMD for beautiful rendering
4. Collaborate in Notion for team projects

This gives you the best of all worlds: local-first writing, beautiful mobile reading, and team collaboration when needed.

Reading Your Notes on Android

Regardless of which approach you choose, if your notes are in Markdown format (Obsidian or plain MD), MerMD gives you the best reading experience on Android:

• ✅ KaTeX math — renders equations from Obsidian or plain MD files
• ✅ Mermaid diagrams — flowcharts, graphs, timelines
• ✅ Cloud sync — connect to where your notes are stored
• ✅ Offline reading — study without WiFi
• ✅ Beautiful themes — dark mode for night study sessions
• ✅ Table of Contents — navigate long notes instantly

Frequently Asked Questions

Can I migrate from Notion to Markdown? Yes, but with limitations. Notion exports to Markdown, but databases become static tables and some formatting is lost. The core text content transfers well.

Can I use Obsidian and MerMD together? Absolutely! Obsidian stores notes as .md files. Sync your vault to cloud storage and open notes in MerMD for a cleaner reading experience on Android.

Is Notion really not Markdown? Correct. Notion uses a block-based JSON format internally. While the editor accepts some Markdown shortcuts (like **bold**), the underlying format is proprietary.

What about Apple Notes, Google Keep, or OneNote? These are simpler note apps without Markdown support, code highlighting, or math rendering. They work for basic notes but lack the power features that Markdown-based tools offer.