Sum-it! is an educational mathematics app that focuses on adding, subtracting, multiplying, and dividing fractions. Sum-it! allows users to input answers, choose different modes, and pick varying levels per mode. Additionally, Sum-it has a video game component in which a "hiker" will move up a mountain if the user gets an answer correct. Once at the summit of the mountain (Sum-it!) after reaching 10 correct answers, the user has won! The app is aimed towards students in grades 3-5.