Better meets is primarily made for schools who use google meets. The features it adds to meets are as follows:

A pin message function for the teacher in the chat window. Teachers are able to click a pin option and pin a message in chat to make it show up highlighted in a box. This will make it easier for students to find links, or important messages, in chat.

A banner function to create a bar at the top of students screens that has some text and a link, when students click the bar, they will be taken to the link specified.

A private message function so students can message their friends and not disrupt class, or message the teacher about something private. The teacher can also see all private messages to make sure they are appropriate.