This app has a lot of problem with usability. 2 the most annoying issues to me: 1. No scroll bar/slow scroll inside the course. If your course is huge, it's really annoy. You can't fast scroll list with tasks. 2. Low resolution of images inside connected Google docs. On their website images are good, but in the app they are in a very very low resolution, so you don't understand what is written. Dear developers, please, solve the second problem ASAP. It's really hurts sometimes.