Reminders is one of the most useful apps on your iPhone (and Mac). One particularly useful feature is the ability to nest reminders under short headings, making it easier than ever to navigate long lists and select multiple items.

Using collapsible headers in callbacks
There are several ways to use collapsible headers in Reminders on iPhone. The easiest way is to type in the header you want to use, for example “frozen”, then type something related to that header, for example, “peas”.

From there, you can swipe right on the “dots” and hit “indent” to turn the element above into a subtitle (you can also long swipe if you like):

To indent (and remove the header), swipe up again and select “Indent” instead. As you add items, they’ll appear under the “Frozen” subheading until you tap “New Reminder” in the lower-right corner of the screen.

Another way to do this (perhaps with a list you’ve already created) is to drag an item onto another item to be nested:

You can add the following by dropping them below the captions, but be sure to line them up so they are indented when you post:

Once you’ve organized your list, you can tap the arrow in the subheading to collapse or expand the section, which makes it easier to navigate when your list is long. You can also tap the checkbox next to Subtitles to tick all the items on your list at once.

You can use this feature to better organize items that were previously in separate lists. For example, you might want to organize your shopping lists by store or create separate sections for carry-on and checked luggage when planning a trip.

Works on Mac too (and it’s better)
Reminders is a useful iPhone app, but it also syncs with macOS on iCloud. It’s generally more enjoyable to use this feature on a Mac because you can use keyboard shortcuts to indent and indent without worrying about dragging or swiping items (though they work too).

To do this, type an item in your list and use Command+] (right bracket) to indent it or Command+[ (left square bracket) to outdent. Like on an iPhone, anything you indent will turn the item into a subheading directly above it.

If you have a long list that you want to organize, it’s very easy to create the subheadings you need, drag them into place, and then start indenting items. You can drag just like you would on an iPhone using your mouse or trackpad.

Reminder is free and useful

Apple’s Reminders app has gone from strength to strength on multiple iterations of iOS and macOS (and tablets, iPadOS). There are several ways to quickly create reminders on your iPhone that automatically sync with other platforms and the platform is completely free to use.

From here you can swipe right on “Pea” and press “Indent” to make the item above your head (you can also do a long swipe if you want):

To stay out (and remove the title), swipe up again and select “Outdent” instead. As you continue to add items, they’ll appear under the “Frost” subheading until you tap “New Reminder” in the bottom right of the screen.

Another way to do this (perhaps with a list you’ve already created) is to drag an item to another item and move it next:

You can add the following items by dropping them below the subheadings, but be sure to adjust them so that they are indented when you drop:

Once you’ve organized your list, you can tap the arrow in the subtitle to hide or expand the section, which makes navigation easier when the list is long. You can also check the box next to Subtitles to check all items on the list at once.

You can use this feature to better organize items that previously lived in separate lists. For example, you might want to organize your shopping lists by store, or create separate sections for hand luggage and checked luggage when planning a trip.