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Obsidian vs 1Writer: catalog facts
Obsidian	1Writer
Free Free for everyone, including commercial use, in the vendor’s own words. Obsidian Sync and…	Paid A paid app on the App Store.
Windows, macOS, Linux, Android, iOS, Browser extension	iOS
Notes are plain Markdown files in a folder you control, readable without the app Linking, backlinks, tags, graph view and fast search across the vault	Works on plain text and Markdown files you own Dropbox, WebDAV and iCloud Drive sync
The application is not open source, only the plugin ecosystem and the releases repository Syncing between devices means paying for Obsidian Sync or wiring up your own sync tool	iOS and iPadOS only No Android or desktop version of its own
Downloadable app, Browser extension	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.