ScratchStream

ScratchStream is a vinyl scratch instrument. Tune into college radio, load your own audio, or grab the mic — then scratch it like wax.

REAL SCRATCH PHYSICS
Touch the on-screen disc to scratch with velocity-based platter physics. Drag the crossfader to cut. Everything responds in real time with sub-5ms latency powered by a C++ audio engine.

FREE FEATURES
- Scratch any Icecast/Shoutcast radio stream
- On-screen vinyl disc with circular gesture control
- Live waveform visualization
- Crossfader for chirps, flares, and transforms
- Cue points — tap to mark, tap to jump back
- Load local audio files or bundled samples
- Griffin PowerMate USB knob support

PRO UNLOCK ($4.99 one-time)
- Half-speed and double-speed detents
- Loop freeze — lock a segment and scratch it forever
- WAV recording — capture your performances
- Sample capture — long-press to save loops
- LFO auto-scratch — automated rhythmic patterns
- Platter weight — light 7" to heavy 12" feel
- Vinyl noise layer — crackle, hiss, and rumble
- FX chain — filter sweep, delay, bitcrusher
- Unlimited station presets
- Full PowerMate LED state machine
- No subscription. No ads. Ever.

COLLEGE RADIO READY
Ships with KPSU Portland, KEXP Seattle, and KAOS Olympia. Add any Icecast or Shoutcast stream URL.

PRIVACY
No account required. No ads. Anonymous performance telemetry only.