We do not have a partnership with Zoom.us, but we feel comfortable recommending it for remote teaching and tutoring with Whizzimo because you are able to share both your screen and control of your mouse.
However, all participants should be on a Windows or Apple computer during sessions. Chromebooks and iPad do not allow for sharing mouse control. This is not a Whizzimo limitation. It is a Zoom limitation.
For sharing mouse control, the view will vary by computer, but generally you will see something like the picture below where you click on "Remote Control" and then select the name of the person you want to share access with: