Reminders You Can Finally Use
The Reminders app is no longer this half useful app that holds the things you asked Siri to remind you about and snoozed for eternity. The Reminders app in macOS Catalina is brand new with a better design that makes it easier to add reminders, organize them and make them more useful.
You can now add attachments to a reminder, change reminders faster with quick edit buttons, set a reminder time that makes sense instead of just snoozing a few minutes or a day and more.
Smart lists can help organize and sort on their own and Siri can even suggest reminders based on Messages and then notify you when you are talking to that person or group in messages again.
If you want Reminders on your Mac to work with Reminders on iOS 13, you'll need to install this upgrade.