I've noticed in the app it is super easy to see your grade for every single course you're enrolled in at a glance. On the dashboard, all of the course tiles are laid out and their overall grades are easily readable in the upper left hand corner.
In the web UI, it requires more effort to click through the courses and find the grades page. It is even harder when the instructor has not made the grades page visible. I have yet to find out how to see my overall grade or a layout of all graded assignments on a course where the teacher has hidden the grades tab.
It would be awesome if the Canvas Dev Team could have the overall course grade show in the top left hand corner of the course tile like in the app. Maybe even make this an option so people who don't want to see it can remove it.