I’m a huge fan of OneNote and I use both versions. I came across this article that should help if you use OneNote, or are considering it. If not… Why NOT?
What’s the difference between OneNote and OneNote 2016
OneNote 2016 (as well as OneNote 2010 and 2013) comes with the Office suite and is available as a free download from www.onenote.com. However, you might have noticed another version of OneNote on your Windows 10 device that’s simply called “OneNote.” This new app, built from the ground-up, works great with any PC, tablet, or smartphone running Windows 10.