Happy Valley

Lex vs Obsidian

Lex and Obsidian are both note-taking & docs tools. Lex is aimed at creators, while Obsidian is aimed at freelancers and developers. Both have a free plan.

Lex

A word processor with AI built in

Obsidian

Local-first markdown knowledge base

PricingFreemiumFreemium · $5
Starting priceNot published$5/mo
Free planYesYes
Free trial——
Built forCreatorsFreelancers, Developers, Creators
Platformswebmacos, windows, linux, ios, android
CountryUS · 2022CA · 2020
Rating——

Choose Lex if

Writers who want AI feedback in a calm editor.

  • Focused writing experience
  • Helpful feedback
  • Collaboration

Look elsewhere if: Teams needing complex documents.

Choose Obsidian if

Individuals, researchers and writers who want ownership, longevity and deep customization.

  • You own your files; works offline forever
  • Free for personal and commercial use
  • Unmatched extensibility through plugins

Look elsewhere if: Teams needing shared, collaborative documents or users who want a zero-setup tool.

Lex vs Obsidian pricing

Lex

    Obsidian

    • Free$0Full app, personal and commercial use
    • Sync$5/user/mo$4 billed annually; E2E encrypted sync
    • Publish$10/site/mo$8 billed annually; publish notes to web
    • Catalyst$25One-time supporter license, early access
    • Commercial$50/user/yearOptional license for organizations

    Lex · Key features

    • Minimal editor
    • Inline AI feedback and rewrites
    • Research checks
    • Sharing and comments
    • Version history
    • Model selection

    Cons

    • Limited formatting
    • Small team
    • Fewer integrations

    Obsidian · Key features

    • Local Markdown files with bidirectional links and backlinks panel
    • Graph view and Canvas for visual thinking
    • Bases: database-style views over notes (2025)
    • 2,000+ community plugins and themes
    • End-to-end encrypted Sync and one-click Publish
    • Daily notes, templates, search with operators, mobile apps

    Cons

    • No real-time collaboration
    • Plugin quality varies; setup can rabbit-hole
    • Sync and Publish are paid add-ons

    Lex vs Obsidian: FAQ

    Do Lex and Obsidian have a free plan?

    Yes, both Lex and Obsidian have a free plan; paid plans add more usage and features.

    Not sure yet?