I am Christian Schlager, responsible for the game Wallop a Woodchuck, available as an app in the google play store.
Wallop a Woodchuck uses the advertisment network AdMob. AdMob is an advertising service provided by AdMob Google Inc.
Wallop a Woodchuck uses the google play service to store the player's score in a leaderboard.
Wallop a Woodchuck does not collect any other personal information.
Google describes the information it collects and how it is used here: http://www.google.com/policies/privacy
I will not use the data collected by AdMob.