Sorry to bear bad news
This is a piss poor app. Sitting in my hotel room in Inverness, I downloaded the app and thought “let’s go and explore!” So I go into the app and it offers me no overview, no historical background, but a list of numbers. Perhaps this is a game of bingo? So I try hitting 1 and it tells me (in microscopic font) to go to the castle. I cannot see a map of the walk, not read the text until I go there! Why? Hey guys, I just came from Kirkwall and they have a really nice app/ guide. Take a look and copy that Deleting the app
