Here’s a little chart for you to compare Koalendar and formLimiter for yourself:
FormLimiter is a free Google Forms add-on that automatically closes a form when constraints are met. You can close a form when a certain amount of respondents are done filling it in or when a deadline you set has been reached. You can use this to manage sign-ups for classes, workshops, exclusive meetings, and others. It’s functional, but it’s tedious and slow to set up. Its level of customizability is dependent on the amount of time and effort you’re willing to spend to input all your available time slots manually. While this is usable for temporary engagements, it’s not as sustainable if you regularly hold appointments. Since it’s limited to Google Forms, the add-on doesn’t integrate with calendar apps and other software.
Koalendar is a great formLimiter alternative because it offers a clean, modern, and intuitive interface, for free.
Your invitees will get a delightful booking experience along with a customizable questionnaire to qualify them. You'll also enjoy a live and quick customer service, directly from the developer.
But don't take our word for it: feel free to try Koalendar free account.