How can I use stamps?

You can use emoji as stamps by registering them as templates. This is surprisingly handy, so please give it a try. Here is how.

1. Touch and hold a date on the calendar, open "Templates", and tap "Add a Template"
2. Set just an emoji as the event title and save it. If it doesn't need a time, making it an all-day event works well (if the label showing up on the calendar bothers you, set a suitable time instead)
3. Touch and hold the date where you want the stamp, open "Templates", and tap the stamp to add it

From then on, you can use it just like a stamp.