not sure but could be the same type of app as Onenote, Evernote or Google Keep
http://www.pcworld.com/article/2031...-vs-evernote-we-name-the-note-app-winner.html
comparison link
I'm with EE. Have you found the app takes a while to find your route? Very annoying but when it finds route it brilliant. I use it every day.
i have looked at (and played with for a while) those, omnifocus is more for organising things you need to do rather than keeping notes, its great at reminding you when things need to be done and only showing you actions relative to what you can achieve at a certain place time, its overkill for most people but if you do any kind of project management (and particularly if you are a disciple of David Allens GTD system) then its like having a second brain that never forgets anything