Lineup Builder is a free Android application developed by amiar. As the name suggests, it allows users to create their own football line-ups. The app features more than 1000 football shirts to choose from, including new ones, and offers a variety of stadiums to select as the game venue.

The app's interface is straightforward and easy to navigate, with a user-friendly design. Users can choose their team's formation and select players from a list of available options. The app also provides a feature to save the line-up for future reference.

Overall, Lineup Builder is a great tool for football enthusiasts who want to create their own line-ups and experiment with different formations. The app's extensive collection of football shirts and stadiums make it a fun experience for users.