There is also MeetingBar [1] which is free and open source [2]. I would say there is one feature that none of the competitors in this space have done is auto join next meeting. This sounds easy, but it is actually hard [3]

[1] https://apps.apple.com/app/id1532419400 [2] https://github.com/leits/MeetingBar [3] https://github.com/leits/MeetingBar/issues/30