For everyone who's going to travel to Poland or Ukraine I advice EURO Travel Guide 2012.
It is a free catalogue of football championship EURO 2012, providing information necessary to visit the championship. The application contains a calendar of matches with which you can easily and conveniently track games, results of games within groups, Also there is a possibility to update the information about already played matches. The application includes a detailed review of the participating cities, their sights and the most interesting facts about them. By viewing the teams profiles one may find general information about the teams, tournament statistics and other useful information. Also there are photos detailing the stadiums hosting the tournament.
It is possible to book tickets for matches and hotels in the cities hosting the tournament.
The app is available here: http://safe-session.com/guide-application