Tonal for Songwriters is a practical harmony companion designed to support you while you play and write on your instrument. Built around a piano-first interface for keyboard players, powered by a tonal engine designed to work beyond a single instrument. Choose a key and Major or Minor, and instantly explore the full harmonic context: diatonic chord degrees, scale notes, inversions, chord variations, and playback controls in one clear workspace. Built for real writing sessions: Understand harmony quickly Use it as a guide while you play your instrument Experiment with inversions and chord colors without breaking musical flow Core features: • Key + Tonality engine (Major / Minor) • 7 diatonic chord degrees generated from tonal context • Consistent note spelling by key (no confusing enharmonic swaps) • Chord inversion controls with “Apply to all degrees” • Chord variation controls (triads, sevenths, suspended and extended options) • Visual scale reference with note playback • Chord and scale playback with timing and sound preset controls • Keyboard View and Easy View for different workflows • Register awareness (Low / Mid / High) for clearer voicing feedback • Compact Super Menu for playback, sound, appearance, and presentation guide Pro features (one-time unlock, no subscription): • All chord inversions across degrees • Full chord variation set (sevenths, suspended, extended, altered options) • Expanded scale library • Additional sound presets and advanced playback options Designed for songwriters: Whether you are sketching progressions, testing harmonic colors, or checking available scale tones, Tonal gives you a focused and musical workflow without unnecessary complexity. No account required. Just open the app, choose your tonal center, and start writing.