The free tier is surprisingly feature-rich. It provides all the essential tools needed for standard video conferencing.
The free version is officially called Zoom Basic. It is designed for personal use, small teams, and casual meetings. $0 per month. Account creation: Requires only an email address. No credit card: No payment details needed to sign up. Download: Available free on mobile, desktop, and browsers. What is Included in the Free Plan? is zoom a free app
This is the most important limitation to understand. The free tier is surprisingly feature-rich