Sekrety bydgoskiej historii
"Secrets of Bydgoszcz history"
Application developed with Xamarin.iOS.
More info:
https://m.facebook.com/SekretyBydgoskiejHistorii/
https://m.facebook.com/KDhistoria/
App available in AppStore: https://apps.apple.com/pl/app/sekrety-bydgoskiej-historii/id1494749880