Learning the rules of racing is a little more exciting with You-Tack Pro’s Illustrated Racing Guide for iPhone and Android. The app includes the official ISAF racing rules of sailing complete with illustrations, explanations and 3D animated quizzes. The app is divided into definitions, rules, signals and quiz/score so you can easily find what you’re looking for. And a favorites section allows you to store the rules that you aren’t sure about for quick reference when you need them. For a complete demonstration on how the app works, go to www.you-tack.com. Priced at $19.99.