CahOut is an iPhone application designed to help users exercise their brain by testing speed and accuracy in counting change. Whether you prefer the "counting up" technique, where you add the smallest coins to the total owed followed by bills, or sharpen your human calculator skills through straight subtraction, CahOut offers a fun way to improve your mental math abilities. With this app, you can enhance your skills and manage calculations like a pro, making it ideal for those looking to boost their counting accuracy.

Challenge yourself with various scenarios and practice different methods to handle change efficiently. CahOut is a free application in the Education & Reference category, suitable for users of all ages looking to enhance their math skills in a practical and engaging way.