Later has become my go to app for quick reminders on iPhone. It is much simpler to use than Apples Reminders app for quick reminders. It also prevents cluttering up your calendar with a bunch of miscellaneous reminders if you’re using a third party app like Fantastical.
The UI is so simple to use. The writing surface for entering reminders reminds me of writing in Drafts.
Later then lets you schedule reminders in natural way by choosing times like this evening, tomorrow morning or next week. These pre-sets are changeable in the settings.
When the reminder is due an alert will come up on screen and you can either dismiss it or tap to bring up options for snoozing.
This is so quick and easy. And best of all the iOS app is free.