Hi Jenny,
Great to hear what you are doing, it sounds brilliant. I started using Todist for myself about 4 months ago and love it. It is very easy to use the free version, you can have several projects on the go and there are some good functions like tagging and priorities. I like the simplicity of it but I do go through it every Friday to reschedule tasks, otherwise it can get a bit overwhelming when the “overdue tasks” mount up, could add stress to a certain type of student! I read a great book that goes into managing time in more detail which is what convinced me to use it GRIP – The Art of Working Smart (gripbook.com)
best wishes,
Rachel