TapCal pursues the simple interface with the motto "handy application for any users". It has very minimum buttons and menus to avoid the mess of the interface and allows highly intuitive navigation.

Scheduler application is, by its nature, launched and viewed many times a day. To make users comfortable, TapCal allows users to customize the design to the maximum extent possible.

TapCalss now supports Week View in addition to existing Month View and Day View. Users can choose the layout out of 5 types of Week View based on his/her life style.

TapCal support the synchronization with Google Calendar, which allows users to import the events managed on Google Calendar, edit the events, and export the events to Google Calendar. In case multiple calendars are managed on Google Calendar, TapCal allows users to choose synchronize or not and display the events or not for each calendars.

All the settings can be done within the application. You do not have to go back and forth between application and iPhone system settings. The settings are grouped by views/functions and you can easily understand where to change your purposes.