'BlueBuddy' turns your webOS device into an umpire's ball and strike indicator. It can't be more simple to use, and is viewable in even the brightest sunlight. It even adds a scoreboard to keep track of the score, a feature not found on classic umpire ball-and-strike "clickers".

If you're not an umpire, use 'BlueBuddy' from the comfort of the stands during the game to keep 'em honest! Perfect when there isn't a working scoreboard at the park.

BlueBuddy

"This application is available for free, but cannot be redistributed, and the source code is not open source"