I've been using TidyCal for a couple of months to schedule duo coaching sessions for a professional client (2 clients and one coach). It is a nightmare ! When someone reschedule, they don't get the link to the new Teams, Meet or Zoom meeting. So if you don't check every single appointment and send a link, you get unwilling no-shows, and unhappy customers. At first, I connected my Zoom, Teams and Meet accounts to Tidycal, leaving the choice to the clients of the tool they prefer, and ended up with 2 people on the same meeting getting 2 different connection link (one on Meet, and the other one on Teams !). Unfortunately for me, it is a coaching campaign, and I couldn't change scheduling tool in the middle of it in order not to create too much confusion for the client. I also encountered a problem with the availability settings : Some slots where shown twice or thrice on the booking page, even though only one coach was available. So I guess Tidycal is ok if you only have one-to-ones, and you are just beginning your business. But it definitely isn't a company grade scheduling tool.