SCRATCH
STREAM
Scratch live radio like a record.
A vinyl scratch instrument for your phone. Tune into college radio, load your own audio, or grab the mic — then scratch it like wax.
Scratch live radio like a record.
A vinyl scratch instrument for your phone. Tune into college radio, load your own audio, or grab the mic — then scratch it like wax.
Touch the disc to scratch. Drag the crossfader to cut. Everything responds in real time with sub-5ms latency.
Circular gesture control with velocity-based scratch physics. The disc responds to your touch exactly like a record under your finger.
Real-time speed readout tracks your scratch velocity. The buffer bar shows how much audio is loaded and ready to scratch.
Mark In, REC, LFO, and speed detents — all one tap away. Half-speed, double-speed, or normal playback.
Switch between live mic, college radio stations, and bundled scratch samples in one tap. Unified source selection.
KPSU Portland, KEXP Seattle, KAOS Olympia — built-in college radio. Tap a station and start scratching whatever's on air.
Vocal Ahhh, Horn Stab, Funk Noise, Bass Drop, Chirp Up, Vinyl Texture, Drum Hit, Synth Pad — scratch-ready out of the box.
Live radio, MP3s, bundled samples, or your mic. If it makes sound, you can scratch it.
Circular gesture control with velocity-based scratch physics. Drag to scratch, tap center to cue.
On-screen crossfader for scratch cuts. Chirps, flares, transforms — all the classic techniques.
Stamp a cue point on a killer moment. Click again to snap back and scratch it to death.
Half-speed for slowed+reverb vibes. Double-speed for chipmunk chaos. Scratch stays relative.
Bundled scratch samples with a unified source picker. Switch between radio, files, and samples in one tap.
Scratch your own voice. Mic feeds the buffer in real time with a level meter.
LFO-driven automated scratch patterns you can shape and layer over any source.
Mark in, mark out. Freeze a segment and scratch endlessly while the stream buffers ahead.
Record performances to WAV. Capture, share, or sample them back into the buffer.
Feedback delay that activates on backward scratching. Pull back on the disc and ghostly trails follow every movement. The effect builds and decays naturally, adding depth to every scratch session.
The premium scratch experience. Connect a PowerMate USB knob and the LED ring syncs to your scratch velocity. Spin to scratch, click to cue, hold to cut. Weighted aluminum with zero latency — it feels like a tiny turntable platter.
Built-in college radio. Tap a station and start scratching.
ONE-TIME PURCHASE
Unlock the full instrument. No subscriptions, no recurring fees. Pay once, scratch forever.
Available as an in-app purchase on Google Play
C++ DSP engine with lock-free ring buffers. Variable-rate playback via Oboe at 44.1kHz. Velocity-based scratch physics with sliding-window estimation. Sub-5ms audio latency.
What's coming next.