Great tool, great Price.
I use it for severeal months on a regular base and it is easy to handle and runs stable. I was able to cancel my Calendly Account that was about 100 $ a year.

Only in Calendly I was able to mark easy calender with a different colour, in Tidycall I have to chose one colour for all calenders. So what, if that is the only "disadvantage" I can easily live with it.