The flexibility of their API call, and how well documented they are. The UI/UX is also better than Calendly or other booking tools in my opinion

I love how detailed the personalization and customization options are on Cal.com, with lots of advanced functions for availability and booking limits. I appreciate that it integrates with Stripe for payment processing, making it easy to collect payments upfront. It's impressive that the robust features I'm using are included in the free plan - I only have to pay for payment processing. It feels like a very powerful tool, and it doesn't cost me anything except for paid session transactions.

I like the ease with which I integrated Cal.com into my website, allowing me to simply choose the days and times I can be available, as well as organize vacations. The fact that I don't receive spam and the company doesn't send me many messages makes me feel that my data is not a product. The positive experience continues with the setup, which was very simple, without any issues. I also appreciate that Cal.com operates autonomously, without the need for third parties, which greatly facilitates scheduling meetings directly through the site.