How Much Does Obsidian Cost in 2026?

Obsidian's business model is unique: the core app is free forever, monetization comes from optional add-ons (Sync, Publish) and a commercial license ($50/user/year). No ads, no tracking, no data sent to the company. Your notes live in plain Markdown files in folders you control — if Obsidian disappears tomorrow, your notes are still perfectly usable in any text editor. For a solo user on a single device, Obsidian is free forever with no asterisks. Add Sync at $4/mo annual ($48/year) for multi-device use + E2E encryption + version history — dramatically cheaper than Notion Plus ($96/year). Add Publish at $8/mo annual if you want to publish notes as a website. Catalyst at $25 one-time supports the developer and gives access to beta builds. Commercial License at $50/user/year is legally required for business use — many ignore this but it's written into the EULA. The 1600+ community plugins turn Obsidian into anything you want: task manager (Dataview + Tasks plugins), research database (Zotero integration), spaced repetition (Spaced Repetition plugin), daily journal (Calendar + Periodic Notes), PKM system (Dataview + Templater). Where Obsidian wins: data ownership, privacy, total cost over 5+ years, plugin ecosystem depth. Where it loses: multi-user collaboration is limited (Sync supports shared vaults but it's not Notion-class team collaboration), and the initial setup + plugin customization takes 5-10 hours for a complete system.