Add Tags to Your Notes
With iOS 15 and iPadOS 15, Apple added tags for the Notes app. This makes it easier to search for the notes you need without trying to remember what you wrote in them, or figuring out which folder you buried them in.
To add a new tag on your notes, all you need to do is type “#” followed by the word you want to use. Your keyboard will offer autocomplete suggestions for any tags you’ve already created, but you can also keep typing to create a new tag right on the spot.
As with other tag-based systems, you can add multiple tags to a given note, and can even drop them right in the middle of your text.