ChordInvert vs OnKey

ChordInvert™ is a graphical reference and a learning tool for major and minor chords and their inversions. Look up the key signature and component keys for the root chord of any key, along with its first and second inversions. ChordInvert displays component keys three ways: as notes on a musical staff; highlighted keys on a piano keyboard; and note names, including sharps and flats. Use the Quiz tab to build your mastery of the notes for all the major and minor chords and inversions. Your Quiz tab score tracks your progress and makes the learning more fun.

OnKey Scale Practice is a simple, effective tool that helps musicians practice scales and chords with clarity and focus. Just enter your preferences and instantly generate readable, note-based exercises—no more flipping through books or writing them out by hand. Perfect for warm-ups, technique drills, or theory work, whether you're a beginner or an advanced player. Features: Select your scale or chord type Transpose to any key Set your range and clef Choose from various patterns Add note names and time signatures Designed for flexibility. Built for clarity. For all instruments.