Bracket Maker allows you to create your own tournaments. The tournament field can have 4, 8, or 16 teams and allows you to customize your team names and match-ups. This is perfect for ping-pong, air hockey or even beer pong tournaments!! I use it all the time it's a fun app. https://market.android.com/details?id=appinventor.ai_tylerleonard94.BRACKETS
