Calendar

To add calendar to iOS calendar:

Here is a tutorial: https://m.imore.com/how-subscribe-calendars-your-iphone-or-ipad

The link:

https://calendar.google.com/calendar/ical/winnetkatroop20%40gmail.com/public/basic.ics

Access it from browser: 

https://calendar.google.com/calendar/b/2?cid=d2lubmV0a2F0cm9vcDIwQGdtYWlsLmNvbQ