There are times when you just need a small yacht in your hand, whether you're trying to explain the America's Cup to a non-sailor, coaching your own young sailor, discussing the rules with your crew, talking to your team about mark traps, or defending your corner in the protest room. *** Important - this app requires a phone that has a geomagnetic/magnetometer sensor. This sensor is typically not present in more affordable devices. Please confirm your device has this sensor prior to purchasing