[usbsea]

Yes sort of enough to be useful to use, and I do use it, but not complete enough to be perfect. A bit like Google tasks!

It does the main things though - it can check other calendars, people can book into your calendar, it deals with time zones and schedules.

It fits into the valley of "use if you are already using Google stuff alot, but not worth it as a solo feature if you don't".

Cal.com is way better. But then that is no suprise, it's their only job.