The instructions dont work with US dollar bills, but with Euro bills, Canadian dollar bills, Pound sterling banknotes or just use a 2:1 ratio rectangle. For dollar bills see my other App "Dollar Bill Origami". Money Origami teaches you to craft beautiful shapes using only a money bill. Fold bills to create a memorable cash gift, leave someone a very special tip, or to entertain your friends. All 30 origami designs include detailed, step-by-step instructions and high-quality photos of the finished product. Each type of origami fold is shown in a precise, visual guidebook included right in the app. TOP FEATURES • 30 shapes including shirt, butterfly, flower, heart, and more • High quality instructions, diagrams, and photos • Easy-to-use, polished user interface START FOLDING • Step-by-step instructions for each origami masterpiece • Folding guide and techniques included • Designed for beginner and intermediate origami enthusiasts Have questions or need some help? Contact us at [email protected] Website: http://oribot.com