Sharpmony is the first AI-based tool to help music students and teachers. It includes a mobile application and a web portal that provides harmony students with AI-based tools to create and review classical harmony and composition exercises. It is worth noting that the device's camera allows the recognition of scores annotated on paper and their automatic revision. It also provides Teachers with tools to manage students and groups of students; assign them exercises; decide the harmony rules, and perform online monitoring of the work done by students. They can also perform AI-assisted composition. Sharpmony is available for download on Google Play. The web platform for teacher registration is available at: https://sharpmony.unex.es. Since its launch there are 11 registered institutions, more than 1800 students, and several million checks on notes and chords processed.