What are some alternatives?
When comparing ApPHP Calendar and Bunch, you can also consider the following products
Google Calendar - Spend less time managing your day & more time enjoying it
Houseparty - Brining empathy to online communication.
Teamweek - A project management software to help you get the best overview. Plan fast, change plans faster!
Bonfire - Jump Start your CodeIgniter applications.
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.
Google Duo - Google's answer to Facetime, high-quality video calling on iOS and Android.