Absolute Rubbish
Unless you buy the option to get rid of the ads, this is unusable. The ads are not the usual banner, but a complete obtrusive overlay that covers up everything. So as a navigational aid this is utter rubbish. And then, even if you shell out the money to get rid of the ads, it would seem that in order to access the metro map of your particular city, you have to first scroll through the list of cities to find yours. This is a cumbersome and self defeating implementation of a business model designed to coax a fee off the user. I am not against inducements to get the user to pay something. Developers are not charitable organizations. But if the user is bludgeoned with such a negative experience, then the developer stands no chance of letting the user decide how good and useful the app is. For my part It has been removed from my devices given how many alternatives there are. Once upon a time this was a really good app. I still have it for two different cities. They are separate apps and a joy to use. But I guess the developer has lost the plot somewhat. Don't waste your time and effort!