Toz - Geometric Music

You've heard harmony. Now see it. On the Tonnetz grid, a major chord is a triangle pointing up. Flip it — minor chord. Add a corner — seventh chord. These aren't icons. They're the actual geometric structure of the notes. Toz makes this 200-year-old music theory map something you can play. --- ON THE GRID --- Draw Chords Drag to connect notes. △ = major, ▽ = minor, ∟ = dominant 7th. Hear the chord as you draw it. Build Progressions Link shapes into a sequence. A bar at the bottom tracks your harmonic path. Set a Key Tap any note as your tonal center. Pick major, minor, harmonic minor, or melodic minor. The grid shows what's in — and what's out. MIDI Input Plug in a keyboard. Every chord you play maps to a shape on the grid, in real time. Chord Map A reference for every triad, seventh chord, and scale shape on the Tonnetz. Tap to hear. --- MADE FOR --- - Composers who think about harmony spatially - Music theorists doing Neo-Riemannian analysis - Students who'd rather see intervals than just read about them - Anyone who's wondered what their chords actually look like --- HOW IT WORKS --- The Tonnetz puts the circle of fifths, major-third cycles, and minor-third cycles on one grid. Chords stop being abstract symbols — they have positions, neighbors, and distances. Move one note. The shape transforms. So does the sound. Toz Pro You may purchase an auto-renewing subscription through an In-App Purchase. • Auto-renewable subscription • 1 month ($1.99), 1 year ($14.99), and lifetime ($19.99 one-time purchase) options • Your subscription will be charged to your Apple ID account at confirmation of purchase and will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your Apple ID Account Settings after purchase. • Privacy Policy: https://tozapp.tech/privacy • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/