The trentbarton hugo App is one that I've used personally for public transport in my area. They are the 'really good bus company' in their slogan, but their app is really not good (sorry trentbarton) it's hard to use and feels very outdated.
This is my retake on how the app could look. I've also conceptualized their contactless payment and mango bus card to be included in the app.
L or F like