Since the Kurviger app is made to be used on motorcycles I think it would be a good idea to enhance the menu by using big buttons instead of simple lines of text.
Of course these text elements can be made bigger by changing Android’s setting (like recommended here). But this changes the whole system GUI what could be unintended.
Buttons would offer more size and recognizable symbols and therefore could be operated much more comfortably. Additionally the “all menus in one sidebar”-design could be changed to a “one sidebar for each menu topic”-design to gain more area to place the buttons (and to make the GUI a little bit more modern). Every “topic page” could have a “back”-button to return to the main menu.
Something like this (the “Routing”-button was pressed in this scenario):