It's time to upgrade Notes

If you are like me, you held off upgrading Notes while upgrading your iOS devices to iOS 9. That's because all the great new features also meant notes in a new format that wouldn't sync with the Notes app on your Mac ... until OS X Capitan.

So if you upgraded to OS X El Capitan today, it's now safe to upgrade Notes on iOS. You do so by pressing "upgrade" within the Notes app on iOS.

While there, it's a good idea to check for any notes under a section titled "On My iPhone" and to move those to the iCloud section (assuming you want them to sync via iCloud).

Related: To learn about the new features, check out Apple's page What’s new in iOS and scroll down to the section on Notes.