Another new feature in iOS 18 is the deep integration between Calendar and Reminders. Both calendars and reminders can be accessed from within the same app, and you can also access both from the calendar view. When adding a reminder that has an associated date and time, it will also be shown on the calendar. Similarly, timeline prompts can also be accessed through the timeline calendar. You don’t even have to fill in both fields – just fill in one of them, and the rest of them will be populated automatically.