I have been using TidyCal for about 2 weeks now and it's been super smooth. One thing I really miss from Calendly is copying the timing across different days.

For example, If I want to change my timing from 8:00 to 8:15, I will have to do it manually across all the other days while in Calendly, you can just click Copy to other days and it will just work.

I hope you guys build it soon. (If you need help, I can help you build it for FREE as I love TidyCal and want to use it long term)