any suggestions for calendar apps that can use system calendars? i have my calendars synced via davx5

you know, I’d really love to get a good app that i pay for and that in turn doesn’t collect or sell my data and has no ads, but there’s so many but’s.

• one time payment is not sustainable for development
• i can’t have a subscription for each and every app
• with free and fairly decent apps from big Corp like Google photos, most people won’t bother

just to say: I’m not sure there is a good solution where everyone wins :/