With the HK Kalender app, you can write down everything you want to remember. The app will automatically create a calendar with a list of events for you. The event list will include things like birthdays, anniversaries, holidays, and many more. The event list can be customized to include events for specific days or weeks.

When you want to write something down, just press the date and enter the text. You can use different colors to mark different days and even use different fonts. The app is designed to look like a simple paper-based calendar. It's easy to use and will help you remember important events.

The HK Kalender app also has a list of various holidays in Hong Kong. You can choose to display the day or the week number of the holiday.