I just installed the Canvas App on my iPhone and now I can access the courses I am teaching in the Canvas Free for Teachers LMS. The trick is to input the school as canvas.instructure.com.  I installed both the Canvas Teacher app and the Canvas Student app.  That way I can see what my students see when they install the app.  I think the courses look great on the phone.
Here is a link to a file explaining the process of getting the app and then logging in to your courses:
                                             Installing and Using the Canvas App

Publishers are pushing students away from print and moving them to digital. But the research mentioned in the article below shows that students overwhelmingly say they learn better with print. I have said this before:  My experience is that this difference is even more pronounced in mathematics, especially college developmental mathematics. Students never said they did not want print textbooks; they just didn't want to pay the high prices publishers were asking. Let's give our students a chance to buy print books at reasonable prices, and not force them into digital only. Here is the article:
2 reasons beyond prices that this merger of textbook publishers should worry every college student​