Is there a way to make the side menu opening (when you are in the notes list view) more convenient? For people with short fingers and a large screen is bad UE when must hit the hamburger Burton in the top left corner. I think a better idea is to add gesture control and simply swipe to the left to open the notebook side menu. Or add the return button in the right bottom corner, appearing whether the user scrolls down the note list (or when the list of notes does not fulfill all screen).
When in the notes list view, swiping from the left side of the screen to the right should open the sidemenu (edit: assuming that gesture isn't used by the OS). If it doesn't, that means that the edgeHitWidth tolerance may need to be adjusted.