As seen on TV and used worldwide by over 30 million users Train your dog (or annoy your friends) with this simple to use dog whistle. Quickly initiate a variety of frequency sounds via the dog whistle interface. For general info on dog whistles, the following is a useful Wikipedia link: http://en.wikipedia.org/wiki/Dog_whistle Please check out our other apps, Mobile Caddy (previously chosen as a Staff Favorite), Thumper, Date Util, Gift Tracker, Simple Timer, Dog Whistler (ranked in top 10 overall free apps), Earthquake, and Hurricane Monitor.