The Tri-State PGA app for iPhone.
Key Features:
• View TSPGA tournament info and leaderboards.
• Find courses and course info - across the U.S. and Canada
• Read the latest TSPGA news
• Season standings and stats.
• Check in to TSPGA events, and use GPS to let event staff see your location on the course while you play.

Continued use of GPS running in the background can dramatically decrease battery life.