Chord Spell vs Chord Trees

Chord Spell helps you learn to spell chords on a piano keyboard. A chord name appears — you tap the correct keys. Instant feedback tells you what you got right, what you missed, and plays the chord back so you can hear it. Whether you're a beginner learning major and minor triads or a jazz student working through extended chords, Chord Spell adapts to your level with built-in presets and customizable chord types. It tracks your mistakes and lets you drill them until they stick. Simple, focused, and designed for daily practice.

Chord Trees is an interactive harmony practice tool by Nathaniel School of Music for musicians who want to see, hear, and understand how chords connect. Build chord trees from notes, explore diatonic harmony, compare piano inversions and guitar fingerings, and loop arpeggios with real instrument sounds. The app is designed for students, songwriters, producers, and teachers who want a visual way to internalize chord progressions. FEATURES * Interactive chord tree visualization * Piano chord inversions and keyboard layouts * Guitar chord fingerings and voicing options * Diatonic mode with major-scale harmony and modes * Arpeggio loop playback for ear training * Instrument combinations including piano, guitar, strings, brass, synth, harp, and marimba * Beginner, intermediate, and advanced learning modes * Works without an account BY NATHANIEL SCHOOL OF MUSIC Built for practical music learning, chord fluency, and composition practice.