Obviously if you have a Mac, then you can only use the Mac version and same for IOS or Android devices of course. There is also a version of OneNote to suit Android devices and still another when you open OneNote on your Browser at. There is a OneNote version for an Apple Mac and then one for your IOS device.
You may or may not be aware that there are different versions of Microsoft OneNote currently available depending partly upon the device you are using.
