I love the idea of this app, and the basic functionally works perfectly. After using the app for just one game it became clear that the app needs a couple features.
Almost every youth team divides the kids into teams, so they can rotate each team and this exists on both offense and defense. Being able to assign players to a team is a must have feature of this app to be 5 stars. (Especially for $2)
For example, you might have three teams for your offense/defense lineups, and also have a kickoff team and kick return team. Most couches also have custom name for each team, so the ability to name each team would also really beneficial.
With all the players in order it was difficult to find the players that were on the bench in enough time before the next play. If you could have the teams set up and select every player in that team it would be a huge time saver and improve accuracy.