Skratch Attach

Screen tour

A guided walk through the main screen, top to bottom. Skratch Attach on iPhone runs in landscape only — the app remembers which way you were holding it and starts on that side next launch.

Some of the newest layout details below (FX/CUE placement, the fader/VU combo) apply to iPhone landscape. On iPad and Mac, FX and CUE live on the deck button bars and the faders use the classic rail-and-thumb style.

1. Deck button bar

Each deck has one strip along the top edge. Buttons appear only when they apply:

33/45 (platter speed) · 8% / 16% / 50% (pitch range) · key lock · eject

The whole cell is the touch target, not just the icon. On iPad/Mac this bar also carries FX and CUE.

2. The platters

  • Track info is drawn on the spinning record itself: artist and song title (alternating with a fade), Camelot key, BPM, and current pitch percentage.
  • The per-deck BPM readout sits in the groove band at the 9 o'clock position.
  • With DVS active, the record disc tracks your control vinyl 1:1 — scratch the real record and the on-screen record scratches with it.
  • The platters also respond to three hidden gestures — see Platter gestures.

3. Waveform lanes

One lane per deck, between the platter and the pads, showing about two seconds of track around the playhead.

  • DVS decks draw the waveform from the loaded file.
  • Analog decks draw live from the incoming audio — a real record playing through your tonearm paints its own waveform. On analog lanes the lower half is a mirror of the upper half, not a prediction of what's coming.

4. Center column (top to bottom)

  1. BPM display
  2. Beat division row1/16 · AUTO · 1/4
  3. FX / CUE + TAP — on iPhone landscape, each deck's FX and CUE buttons stack directly above that deck's channel fader, with TAP between them
  4. Channel faders + master VU (see below)
  5. Crossfader — sits low, in the gap between the two pad-mode bars

5. The faders are also your channel meters

Each channel fader's track doubles as a live level meter for that channel; the fader position is the small white triangle beside the ladder. The level shown is pre-fader (but post-gain), so it keeps reading with the fader all the way down — that's intentional, so you can gauge a record's level while you cue it.

The meter between the two faders is the master VU — a separate readout of your main output.

The on-screen meters read true peak and go red at −5.5 dBFS — slightly earlier than clipping, like a hardware meter. They are deliberately on a different scale than the LED ladders on the hardware itself, so don't expect them to match segment-for-segment.

6. Pad mode bar

Five buttons per deck select the pad mode: Live Looper · Loop Player · Platter Play · Sampler · Pad FX. Re-tapping the active mode switches to its secondary mode (for example, Loop Player's second press opens SkratchPads). You can hide the bar in Settings → Customize → Hide Mode Bar.

7. Top-right corner

The hamburger menu (settings), battery indicator, and clock. On iPhone landscape, settings open as a tab bar across nine pages: Audio, Contours, Customize, MIDI, DVS, FX, Presets, Pad Modes, and Devices.

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