CubicCross vs Chordra

Explore a new world of sound and logic with CubicCross — an innovative app that transforms mathematical group theory into musical expression. Powered by Apple’s Core ML and Create ML, and enhanced with NSynth, CubicCross generates dynamic, guitar-inspired tones through rule-based transformations. The app supports multi-format audio playback (MP3, WAV, M4A, AAC, AIFF, CAF), and allows users to compose by arranging colored cube states that follow group-theoretic transitions. Designed for musicians, educators, and logic lovers, CubicCross redefines creativity by merging machine learning, mathematical reasoning, and transformational sound design.

Ever thought "I definitely know how to play this chord..."? The reason why a chord that felt natural in one song suddenly feels awkward in another is because you didn't truly master the chord itself—you just memorized the finger patterns. Chordra mixes your selected chords randomly, so you can build real chord skills instead of just pattern memorization. * Find the chords you need Choose the chords you struggle with most. Quickly select the chords you want to work on with smart filters for root, triad, 7th, extensions, and alt/add. * Save your favorites Create your own chord presets for tomorrow’s practice, or start with built-in major and minor diatonic sets. * Learn on the go No piano around? Use the virtual piano quiz mode to test your chord tone knowledge—perfect for the bus, subway, or anywhere. * Loop Mode for Tough Progressions Loop and repeat any chord progression until it feels natural and effortless. * Practice Settings Customize beats per chord, BPM, and number of chords displayed on screen.