Handstrudel vs Contour

HandStrudel turns your hands into a musical instrument. Using your iPhone's camera and real-time hand tracking, every gesture becomes sound. PLAY THREE WAYS • Melodic Mode — wave your hands to control pitch, filter, reverb, and more • Grid Mode — pinch to play notes on a visual grid, hold to sustain, slide between notes • Drum Mode — pinch to trigger drums across 6 lanes: kick, snare, hi-hat, crash, ride, tom MUSIC THEORY BUILT IN • Pick any key (C through B) and scale (Major, Minor, Dorian, Pentatonic, Blues) • Chord mode plays full triads • Circle of fifths navigation with hand position SOUND DESIGN • 4 waveforms: saw, square, triangle, sine • Dual drum tracks with independent BPM • XY pad controls drum intensity and complexity • Lock any parameter to manual control RECORD & SHARE • 7-second screen recording with one tap • Share directly to Instagram Stories or Reels • Camera filters: Warm, Cool, Vivid, Noir, Vintage, Neon, and more • Motion trails show your hand paths in neon glow BUILD COMPOSITIONS • Record loops in grid or drum mode • Layer multiple loops on top of each other • Loops auto-play and repeat • Export audio as M4A JAM WITH FRIENDS • SharePlay support — jam together on FaceTime • Everyone hears each other's notes in real-time 4 FREE PRESETS • Dreamy — floaty reverb & delay • Gritty — crunchy distortion • Bouncy — playful filter bounce • Chill — slow & spacious Plus premium presets, drum kits, and filters available as in-app purchases. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Contour is an instrument you play by walking. Four neural decoders sit at the corners of a square. Your finger somewhere in the middle is a blend of all four, and the square is drawn as a survey sheet. The contour lines are not decoration. They come from what those four decoders actually produce, laid out so that equal distances on screen are equal perceptual distances in sound. Cross a line and the sound has changed by a measured amount. THE SHEETS Eleven of them, each a different set of four corners, each chosen by measuring the whole library rather than by ear. They are grouped by what the measurement found: BRIGHT — HEHUAN, the brightest, where all four corners hold their own. CONTRAST — BEIYIDUAN, the widest corner spread at 8.2 times. BREATH — NENGGAO, the breathiest. DEPTH — MABO, the deepest at 53 dB. RANGE — YUSHAN, the widest at 66 semitones; JIAMING, the most focused at 17. They are named after Taiwan's high mountain traverses. PLAYING IT Touch the sheet to sound it. The ribbon underneath sets pitch, or send MIDI and play it from a keyboard. Press harder and the note opens up — the contact patch of your finger is the dynamic. Hold on empty ground to drop a mark you can come back to. The readout above the ribbon tells you where you are while you are there: brightness, noise, the grid reference, the frequency. IN A HOST Contour is also an AUv3 plug-in. It runs in AUM, GarageBand, Cubasis, Logic for iPad and anything else that hosts Audio Units, with the position automatable as two parameters and the sheet recallable with your session. The plug-in draws the same map the app does, laid out for the window a host gives it. WHAT IS FREE Three sheets — BEIYIDUAN, NENGGAO and YUSHAN — with the whole instrument: the map, the ribbon, MIDI, reverb, marks, and the plug-in. No time limit and no account. CONTOUR PRO A single purchase, once, unlocks: • All eleven sheets • Recording, straight to a file • The envelope panel — attack, decay, sustain, release • Composing sheets of your own from the library, 4,845 combinations of four corners, with the map baked for the pitches they share Requires iOS 16 or later. iPhone and iPad.