Apps can quickly enter appointments in other apps I use can be displayed in the notification bar.
Registered plan is reflected in the application that works with Google Calendar calendars in addition to the standard Android.
(Not included in the calendar display).
You can also use the alarm function of reminders can be set.
Use the standard calendar and Google Calendar entries Android.
[About the installation
The authority of the installation "Personal Information" message is displayed indicating the reading.
Please note that this is because the permissions required to create a calendar appointment or to read the calendar entries.