Flags! is a complete reference of all the International Maritime Signal Flags. It includes a full list of flag letters, numbers, and substitutes. Learn faster and test your knowledge with custom quizzes. Features: - List of all letter, number, and substitute flags - Detail view of each flag - Learn with quizzes - Great on the Apple Watch - Flashlight morse code examples - Beautiful minimalistic flat design - Universal app (iPhone, iPad, and Apple Watch)