The application has to be intuitive, easy to manage by the travellers of any age.
It is important that changes of the journey could be intuitively updated.
Making travellers “search” for unvisible bottons or menu points is not a good option.
Travellers dont have the time and the nerves to “search” when decisions needs to be made about the next connection , in minutes..
I dont say this to critise your work. I say this to ensure Swiss quality standards are met on a sustainable way.
The application is an fine start, but it has to be enhanced, in my views.