Ultimate Score Keeper allows you to track game scores and strategies. It has two modes: Timed and Quick. The Timed mode has a stop watch and is used for adding points in a game as they happen while the Quick mode lets you add game scores once youre finished your game.
Both modes allow you to include brief strategic notes about the game play which you can use to your advantage the next time you meet the same team.
By looking at the score, this app will automatically draft emails which you can send into your league (or whoever you wish). There is also a history where you can review all your saved game scores and strategies.