Have you tried Paper?

What is Paper?
Paper provides students with unlimited one-on-one online tutoring for any subject, at any time. They provide chat-based access to tutors that give contextualized feedback on precisely where the student went wrong in the learning process and guiding them towards a deeper understanding of the problem. Teachers can see their student’s tutoring interactions and are provided a formal record of their student’s learning outside of the classroom. Teachers also receive insights to help inform their teaching and have a pulse on what students are struggling with the most.

How do I log in?
Log in to Paper through the Clever app on your student iPad. You can also log in with google from this link: https://app.paper.co/login