What are some alternatives?
When comparing ApPHP Calendar and Calendars 5, you can also consider the following products
Google Calendar - Spend less time managing your day & more time enjoying it
24me - Next Generation Personal Assistant
Teamweek - A project management software to help you get the best overview. Plan fast, change plans faster!
Calvetica - The fast calendar for iPhone. Add an event in just two quick taps.
Apple Calendar - Calendar is a personal calendar app made by Apple Inc. that runs on both the macOS desktop operating system and the iOS mobile operating system.
UpTo - Life goes beyond meetings and appointments