CarbonFin Outliner allows you to organize your thoughts, tasks, and projects. Easily create a todo list for today, or track an entire project anywhere you are. Share your outlines, edit them online, and collaborate with other Outliner users.

• Create outlines full of notes, structured lists, tasks, or detailed projects
• Sync your outlines automatically to Outliner Online, OneDrive, or Dropbox for web or desktop editing
• Get a quick view of project progress - tasks with subtasks show a pie-chart indicating percent completed

• Search through all your outlines or an individual outline
• Tag your outlines, and filter based on tag
• Archive old outlines to hide them from view without deleting

Easy-to-use Editor
• Drag and drop to move items within an outline
• Copy, paste
• Undo, redo
• Expand all, collapse all
• Optional outline numbering
• Zoom in to focus on a single subtree

Outliner Online
• Securely synchronize your outlines with Outliner Online
• View and edit your outlines in any web browser
• Import and export outlines as plain text or OPML
• Keep all your devices synchronized
• Share an outline with other Outliner users to collaborate

OneDrive and Dropbox
• Sync your outlines with OneDrive or Dropbox to allow quick import/export
• Seamlessly access and edit across your iOS devices and PCs

-= Recent version history =-

Version 3.12
• Dark mode
• Added confirmation to "Delete Completed"
• Changing "Archived" won't update the outline's modification time
• iOS 13 support

Version 3.11
• OneDrive sync support

Version 3.10
• Sync the order of outlines across devices (CarbonFin outlines only)
• iOS 12 support

Version 3.9
• iPhone X support
• iOS 11 support

Version 3.8
• Open In... support
• Ability to hide the outline list on iPad
• Minor UI tweaks

What’s New

Version 3.12.0

• Dark mode
• Added confirmation to "Delete Completed"
• Changing "Archived" won't update the outline's modification time
• iOS 13 support

Ratings and Reviews

4.5 out of 5
2 Ratings

2 Ratings

Task freak ,

This is the best outliner I can find

I have tried quite a few but none fits my needs better than this one.

Stereoloud ,

Fast, easy, dependable, reliable, affordable!!!

I have been using this since iPhone 3. Now I'm on iPad Air and still using this!

I have Drafts and countless other to-do apps but I still come back to this for the quick input, easy navigation on the UI & reliable sync. There is not a day where I don't use Carbonfin Outliner. I work 60-70 hours a week on average and can't live without this. Other apps take too long to input a quick thought or task, all u need to do is to set up carbonfin to have major outliners and sub-outliners for quick inputs.

I hope they don't stop updating this for life!

AG4Review ,

Nice application but .....

This outliner is a nice application which is complemented with a web application running in a browser and synced with the app is set up. The value of this app lies in its use in combination with the web application. It would be really the best of its kind if the web application would be brushed up ( optimizing the screen layout, folders). The synchronizing with drop box does not work anymore. Overall, still my most often used outliner.


Jeremy Dewey
16.7 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Rated 4+
© 2008-2019 CarbonFin
S$ 6.98


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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