Our apps directly integrate with the iOS Calendar app in several ways:

  1. Our Agenda and Calendar views include items from your iOS Calendar and Reminders apps along with app items in order to give you an unified views.
  2. You can choose to automatically create an entry in the iOS Calendar for dated items in the app, such as tasks, appointments, etc. You can configure this in our app’s My Settings view.
  3.  You can also directly create iOS Calendar and Reminder items directly from our app’s Quick Add options.

You can choose not to open the iOS Calendar app and just directly access things as needed from within our app.

You can see more info at: http://lightarrow.com/lifetopix/common-questions