As for mobile users, the Google Meet app is required for them to use it. The web app allows you to create a Google account and create a meeting. Take note that even the free version requires a Google account.
You may also make use of other company functions, such as international and local call-ins and 24/7 customer service. You can hold meetings for up to 300 hours and invite up to 150 people. However, if you are a GSuite customer, those thresholds would be slightly higher.
The conference lasts only up to an hour, with 100 participants.