Backgammon Online is also available for iOS!
Backgammon Online connects you with the vivid First Internet Backgammon Server (FIBS, see fibs.com). Play anywhere at any time against real people.
• Polished user interface and beautiful boards
• On FIBS, there are also very sophisticated bots of different playing strengths which are a serious challenge to even the most skilled Backgammon players
• Creating a new FIBS account is just a matter of finding a suitable user name, no web-site visits or personal informations required
• Automatic forced moves and bear-off
• Integrated FIBS Chat
• All aborted matches are automatically saved
• Finished matches can be saved in the MAT file format, which is readable by almost every professional backgammon software (match-saving requires Mac OS X 10.7.3 or later)
• Ratings for each player are based on match results and other factors, thus you can easily find a player with your playing ability.
• this app is also available for iOS (iPhone, iPod and iPad) in the iTunes App Store