Apple - Is there an application like OneNote for Mac/iOS?

Microsoft has released a version of OneNote for Mac. It is available in the App Store for users with OS X 10.9 or later.

Outline 2.0, released on the Mac App Store ($40) in December 2013, seeks to mimic OneNote and even sync with OneNote notebooks hosted on SkyDrive. It has a companion iPad app too, sold separately on the App Store. Polarized set of reviews though.

Also, Microsoft Office 2014 for Mac may include OneNote.