WonderPen 2.0.2 macOS

Features:
* Tree view, drag-and-drop to reorder.
* An easy-to-use text editor that supports Markdown.
* Supports full-screen mode, lets you focus on writing.
* Docs can be exported as Image, PDF, Word, HTML, etc.
* Auto save while editing. You can backup all docs as a single file and restore from it later.
* Add memo for each doc.
* Focus on one node of the doc tree.
* Search in all docs.
* Automatic backup.
Compatibility: macOS 10.11 or later
Mac App Store:

https://geo.itunes.apple.com/app/id1173437104