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See what matters now
Today, Upcoming, Inbox, Pool, and Search keep large vaults useful on a small screen.
Markdown tasks, made native
Your Markdown tasks, finally at home on iPhone.
Connect an Obsidian vault or any folder of Markdown files. Cairn turns the tasks already inside into focused Today, Upcoming, Inbox, and Search views—and writes every edit back to the original files.
FreeNo accountNo ads or analyticsiPhone & iPad
The missing mobile layer
Keep Markdown as the source of truth.
Cairn does not import your work into another service. It gives your existing plain-text task system a calm, quick, native interface.
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Capture without friction
Add a task in seconds, use natural dates, and get back to whatever you were doing.
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Stay in your files
Every change remains ordinary Markdown, readable by Obsidian, any editor, and your future self.
No database. No lock-in.
What you tap is what gets written.
Complete, schedule, or create a task in Cairn and the original.md file is updated in place. Sync it however you already do—iCloud Drive, your own setup, or not at all.
See Cairn in motion
From scattered notes to a focused day.
A short look at connecting your files, finding today's tasks, and capturing the next thing without surrendering your data.
Try Cairn for free
Available now
Your notes stay yours.
Free on the App Store for iPhone and iPad.