798 reviews
Content rating
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About this app

Organize shopping lists, tasks, todo-lists, ideas and all kinds of memos. Or use Outliner as a project management tool.
Do everything in a tree-structure with collapsable nodes.


* unlimited number of outlines
* collapsable tree-structure
* todo view
* status
* due date
* import (csv, Natara Bonsai, Treepad HJT, Treeline TRLN, OPML, plain text)
* export (csv, Natara Bonsai)
* configurable outfit
* quick edit
* swipe to move activities left or right
* move mode
* drag & drop
* colors
* languages: english, german, french, japanese, spanish, russian, korean

Features PRO version:

* export HTML
* import/export (csv, Natara Bonsai, Treepad HJT, Treeline TRLN, OPML, plain text)
* sync Google Tasks (2 levels)
* sync Natara Bonsai (USB and Dropbox)
* sync Treepad (HJT, USB and Dropbox)
* sync Treeline (TRLN, USB and Dropbox)
* sync OPML (USB and Dropbox) (e.g. OmniOutliner)
* open Outlines with FileManagers or cloud Apps (e.g. BoxCryptor, ownCloud, EDS TrueCrypt)
* automatically finish branch (optional)
* additional view: Show Due, Show #Hashtag
* uncheck finished activities
* delete finished activities
* search
* backup/restore all Outlines to/from SD-card
* backup to Dropbox (optional)
* launcher shortcuts for Outlines
* themes
* cut/copy/paste subtree (also between Outlines)
* expand/collapse subtree
* sort subtree
* share subtree
* configure default view for activity list
* sharing target for texts
* share Outlines
* notification for due activities
* Sort Order Outline List
* Filter Outline List
* Rich Text (format activity notes)


* Storage: access SD card for import/export/sync/backup
* Contacts: find your Google account for Google Tasks Sync
* Run At Startup: to renew backup schedule when booting
* Network Access: for synchronization (Dropbox, Google Tasks)
* Install Shortcuts: for a launcher shortcut to an outline
* Read Log Information: to send an optional log file to the developer
* Run Foreground Service: nightly backups and due notifications

Even if the official permission for account info is named "Contacts", Outliner does not and is not even able to read your contacts. Outliner just can list the Google Accounts on your device so that you are able to choose one for Google Tasks sync.
If you deny this permission, Outliner works normally but you can't use Google Tasks Sync.

PRO version:

To get the PRO features please install "Outliner Pro Key" from the Google Play store.
Updated on
Jul 4, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
798 reviews
May 15, 2022
This is the 2nd or 3rd time I downloaded and tried Outliner, but until now I couldn't get past those huge 3D buttons. This time I purchased the Pro version (only $5), then wrote the developer to ask for smaller buttons. People - if there is something in this app that is holding you back, I urge you to contact Freddy (yup, we're on a 1st name basis now). You will not be disappointed.
1 person found this review helpful
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Jay Gawlikoski
March 29, 2022
Absolutely spectacular app. Easy to use. So many helpful features and just does everything you could ever want when needing to make, edit, and export outlines. I just had a problem where another app restricted Outliner's Internet access causing problems. The developer responded immediately with very knowledgeable and helpful ideas to help me find and solve the problem. This is an extremely high quality app that I've been using extensively for a year. It is so well worth the purchase!! 🙏
2 people found this review helpful
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Zoom Wood
February 21, 2022
Just started using. Initial impression of this app "Outliner" is VERY GOOD. Suggestions... Allow the change of background color (and text). Easier on the eyes and saves battery. Requires too many clicks to get to "expand all" and "collapse all". Expanding and collapsing subtrees should be a free feature. Allow constant availability and multiple levels of undo/redo for all actions.
2 people found this review helpful
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Alfred Fritz
February 21, 2022
Thanks for the feedback. The PRO version has themes. You can enable a dark theme there. Undo/redo is possible inside the activity notes, if you use the rich text feature (PRO). Undo/redo in a synced tree structure unfortunately is not really possible in a reliable way. We will rather not see the feature in future. Sorry for the bad news.

What's new

* Google Data Safety Form (Play Store)
* Button Style (new indentation icons) (Settings, Appearance)
* PRO: Automatic dark mode (Android 10+, Theme: System)
* PRO: Sync Treeline 3.1, linefeeds
* PRO: Show due, hide activity immediataly after checking
* Fix: Export TXT, cleanup HTML code