NanaCal is not a multi-functional enough to replace the existing calendar application.
■ easy and simple operation
You can drag-and-drop to create / move / copy / delete events.
You can delete the drop copy, to the Trash icon in the drop-in "+" icon.
■ keyword extraction filter
You can organize a calendar to display only certain events.
You can consider the privacy / security depending on how to use.
■ Synchronous iCloud, and other Calendar
You can be synchronized with iCloud and other Calendar as the same as the standard calendar.
Next to the calendar app favorite, place gently, I would appreciate in combination.
Bug reports and suggestions for improvement of the app is here
Mail: nanashina.kobo @ gmail.com
Twitter: @ NanashinaKobo