As users also can input even on the one hand, it is very useful specially when they are moving or in a hurry.
The intuitive interface lets them not high of IT literacy to use easily and without stress.

1)smart input method
Immediate input is possible when users start the app.
No worry of double booking because users can input a new plan while checking existing appointments.
Operation feeling of distinguished by smooth touch to swipe or scroll.

2)cooperation with existing calendar
Displays all calendars in the terminal but it can be set individually.
Synchronizes with Google Calendar automatically if you are using google calendar.

If you use "Fast Calendar", the native calendar is no longer required!

Screenshots: