For Online Maths Tuition I use Zoom and an interactive whiteboard. Screen sharing can be done by both myself and the student and annotations can be made on the screen by both of us as we work.
Many of my students prefer online as they can be in the comfort of their own home. It also saves parents time by not having to transport their child to and from the tutoring lesson.
All notes from the lessons are sent through at the end so they can be referred back to if needed.
If you would like to find out more then please feel free to contact me for an informal chat about your requirements.