This is a special founder interview from Jane's book, "The UI Audit." In this interview Tope Awotona, the founder of Calendly, shares his product development journey. To build this revolutionary scheduling tool, he reviewed over 30 competitors — all to find out their strengths and weaknesses. Tope shares how he developed his product as a non-technical founder, and how Calendly leverages free plans as a viral form of marketing.