Perhaps in response to MicroSoft’s updated OneNote app, Outline+ is free for 24 hours.
This app is a OneNote reader and editor designed for iPad. If you use OneNote for personal work, class or field notes, Outline+ is an app for taking your OneNote notebooks anywhere with you.
You can use this app to quickly capture new ideas, build a concept map, create to-do lists and search all your content and sync it with OneNote via Dropbox secure cloud or iTunes.
You can watch the Outline App trailers here to learn more.