The best, that was.

2016-June: Hasnt been updated in over a year and hasnt played nice with new iOS version (in particular badge/date display). Darn shame given that beside that issue, no other calendar app including all the ones still under active development offers the ease of use and clarity of Calvetica.

Would happily buy again an updated version. Meanwhile, sad.

Previous:
The scrollable month view is indispensable - if its the end of a month, what good is seeing the last three weeks already gone by?

The event-creation workflow is also more comprehensive yet perfectly streamlined for ease of use than in competitive products.

Has been a few years yet and no other calendar competitor has bothered to mimic Calvetica so despite some minor technical troubles typically involving event population and display, this remains the indispensable calendar for iOS.

AndyBean about Calvetica Calendar, v5.3.1