Had to switch from Calendly because they stopped supporting Apple Calendar! Bought TidyCal and it's really great. So much cheaper than Calendly too. And for organizing group events I've used the Polling feature (to poll dates everyone is available) twice in under 2 weeks - super useful. I highly recommend TidyCal - such an easy transition too as its interface looked similar to Calendly and I didn't have to learn a new piece of software. I had watched some guy on YouTube do a really thorough run down on the app before I purchased which was *really* helpful.