In the Reminders app, you can use tags as a fast and flexible way to categorize and organize your reminders. You can add one or more tags to a reminder, such as #shopping and #work, and easily search and filter your reminders across lists using the Tag Browser or Smart Lists.
Note: All Reminders features described in this guide are available when you use , then tap Create Smart List.
View all items with tags: Tap All Tags.