We’d like to do a little bit of testing on Roll20.net. It’s predominantly made for the Desktop Browser but they do have an app for Android and iPad Tablets.
In Roll20, there would be a lot more stuff for DM to have to manage but it would facilitate maps without having to print them out or draw them plus mechanics like handling initiative (turn order), dice rolls, etc.
See more for examples of Token that you would use on the Roll20 back to represent your character