Blitz App was build as a tool to connect the user with the TV Displays installed in the Bucharest subway station. Main feature was the possibility to set up and advertisement to be shown in a station at a specific time. Other features were content related (local news delivered upon user-preferred location, multi media content), shopping (eMag integration), Special offers, Transit calculator (hot to get from a starting subway station to the destination), Subway ticket payments from the app and job positions available. The technical challenge was to build the order solution for the advertisements placed from the app and displayed in a specific location. This feature has been awarded with Silver - Best use of Mobile Advertising at Mobilio