If you install fDroid via the APK on their site you can install DAVx for free, which is likely the for-pay app you talked about for bringing your calendars in from a CalDAV server. Still not as easy or native as installing a Google Calendar account, but it does work and generally works quite well.
Ok, DAVx must be the name - i see to recall the mobile app having "dav" in its name. Thanks!
Actually I'm quite ok paying for this app...I like to support developers, especially if an app is open source. But, my annoyance is less about paying for an app, and more about google's calendar - which is forced upon an android user - not playing nice with caldav...And forces a person to sidestep things.
I was a really big fan when android first came out, thinking i would have plenty of freedom (or at least a reasonable amount of freedom) of bending my phone's OS - at least when compared to Apple's ios very restrictive approach...Wow, how things have changed! I feel like android is too locked down. Ok, some might think that ios is still more restrictive...But, to me, both ios and android are tech prisons just different colors of paint on the wall. I say that last statement with my fingers crossed and praying for pinePhone and other linux-y type phones to really make it mainstream!