Oh and it's free so far
this man said:But can I use OneNote offline? Or do I have to be on the internet every time I want to use it? If I can't use it offline it's useless to me.
At least with apps like Notability and Apple Notes I can use them offline and sync them when I have an available internet connection. I don't know about your area of the world but here I can't always get a wifi or other kind of connection.
Bosvaark said:Outline is an offline or online meaning you can synch any new info if you have an Internet connection , or wait until you do have an Internet connection, I carry all my OneNote files with me, try it there is no cost, but you will need to setup Dropbox to synch data, I find it works the best compared to the other offerings on the app store.