Notes

After previously gaining the ability to make memos that contain more than just text, the version of Notes in Sierra (and iOS 10, too) enables you to collaborate with other people over iCloud. From the note you want to share, click the icon of a person on the toolbar, and enter email addresses or phone numbers of people you want to work with. Invitations can be sent using Mail, Messages, Twitter, Facebook, LinkedIn or AirDrop, or by copying and pasting a link into another app or service.