NDM-Violon is a free educational music game focused on learning how to read music notes on a violin fretboard. The program offers various features to help users improve their musical skills. It includes two main types of activities: reading music and ear training. With four different modes such as Training, Timed Game, Survival Mode, and Challenge Mode, users can practice and challenge themselves in different ways.

The program provides three notation systems for displaying notes names, options to show/hide frets, sound and vibrate modes, saving scores, and sharing achievements on social media. Additionally, users can practice on a single string of the violin, explore specific scales, access a dictionary of scales, and receive help displaying notes names for each violin string.