iPhone Interface — TREMOR for iOS Guide

Portrait Mode (2 Decks)

In portrait orientation, Tremor displays a vertical dual-deck layout optimized for one-handed operation and quick track loading. Deck A sits at the top, Deck B at the bottom, with shared controls in the center.

Portrait Layout

+----------------------------------+
|         DECK A WAVEFORM          |  Scrolling waveform overview
|     (beats, position, zoom)      |
+----------------------------------+
|                                  |
|         TURNTABLE A              |  Album art on vinyl
|      [ CUE ] [ PLAY ]            |  Transport controls below
|                                  |
+----------------------------------+
|       CENTER PANEL               |  Swipe left/right for pages:
|  [Crossfader] [EQ] [FX] [Sync]   |  Mixer, EQ, Effects, Sync, etc.
+----------------------------------+
|                                  |
|         TURNTABLE B              |  Album art on vinyl
|      [ CUE ] [ PLAY ]            |  Transport controls below
|                                  |
+----------------------------------+
|         DECK B WAVEFORM          |  Scrolling waveform overview
|     (beats, position, zoom)      |
+----------------------------------+

2-deck portrait mode with tracks loaded

Deck Components

Waveform Overview

Shows the full track with beat markers, playback position, and color-coded frequency bands. Drag to scrub through the track.

Turntable

Spinning vinyl platter with album artwork. Touch to scratch, spin to seek, release for motorized spinback.

Transport Bar

Play/Pause, CUE, Skip, Repeat, and Headphone Cue buttons. Tap the music note to open the library.

BPM Display

Shows detected tempo. Displays a pulsing "---" animation while analyzing. Tap to access sync controls.

Center Panel

The center panel between the decks contains shared mixing controls. Swipe left or right to access different pages:

Mixer - Crossfader and volume faders with VU meters
EQ - High, Mid, Low frequency knobs for each deck
AU Effects - Delay, Reverb, Filter, and more with interactive controls
Performance Pads - Hot cues, beat loops, pad FX, sampler
Sync - Beat sync controls, phase display, TAP downbeat
Video - Blended video preview when mixing video files
Mic/Rec - Microphone input and mix recording

Landscape Mode (2 Decks)

Rotate your iPhone to landscape for a side-by-side layout with larger waveforms and turntables. This mode is ideal for longer mixing sessions and provides more visual feedback.

Landscape Layout

+----------------++--------++----------------+
| WAVEFORM A     ||        ||     WAVEFORM B |
+----------------+|        |+----------------+
|                || CENTER ||                |
|   TURNTABLE    || PANEL  ||   TURNTABLE    |
|       A        ||        ||       B        |
|                ||        ||                |
+----------------+|        |+----------------+
| [CUE] [PLAY]   |+--------+|   [CUE] [PLAY] |
+----------------+         +----------------+

Landscape Advantages

Larger turntables - More precise scratch control with bigger touch targets
Wider waveforms - See more of the track and beat grid at once
Natural DJ orientation - Mirrors the layout of physical DJ controllers
Better for performance - Easier to use both hands simultaneously

💡

Lock Orientation

Use iOS Control Center to lock your screen orientation if you prefer to stay in portrait or landscape during your set.

Experimental 4-Deck Mode

Tremor includes an experimental 4-deck mode for iPhone in landscape orientation. This advanced layout lets you mix four tracks simultaneously using the innovative Orbital Fader.

ℹ

How to Enable

Go to iOS Settings > Tremor > iPhone > 4 Decks and toggle it on. This mode is landscape-only and experimental.

4-deck landscape mode with Orbital Fader

4-Deck Landscape Layout

+----------++----------+
|  DECK A  ||  DECK B  |
| waveform || waveform |
| platter  || platter  |    +------------+
| controls || controls |    |  ORBITAL   |
+----------++----------+    |   FADER    |
+----------++----------+    |    (XY)    |
|  DECK C  ||  DECK D  |    +------------+
| waveform || waveform |
| platter  || platter  |
| controls || controls |
+----------++----------+

The Orbital Fader

The Orbital Fader is a 2D XY crossfader that blends between all four decks based on your finger position within a square. It replaces the traditional linear crossfader with spatial mixing.

Corner = Single Deck

Move to any corner for 100% of that deck. Top-left = Deck A, Top-right = Deck B, Bottom-left = Deck C, Bottom-right = Deck D.

Edge = 2-Deck Crossfade

Move along any edge to crossfade between two adjacent decks. Top edge = A/B, Left edge = A/C, etc.

Center = All Four

Position in the center to blend all four decks equally at 25% each.

Smooth Transitions

Volume levels always sum to 100%, preventing volume jumps as you move between positions.

⚠

Experimental Feature

4-deck mode on iPhone uses compact controls to fit everything on screen. For a more comfortable 4-deck experience, consider using an iPad.

Touch Gestures

Tremor's touch interface is designed to feel like real vinyl. Master these gestures to unlock the full potential of touchscreen DJing.

◌

Turntable: Touch and Hold

Touch the vinyl platter to stop the track and engage scratch mode. The track freezes under your finger like a real record.

↺

Turntable: Spin

While touching, rotate your finger around the platter to scratch or seek through the track. Faster spins move further through the audio.

↑

Turntable: Release

Lift your finger to release the record. The platter spins back up to speed with realistic motor physics. Enable Audio While Seeking in Settings for CDJ-style scratch audio.

↔

Waveform: Drag

Touch and drag the waveform display to scrub through the track. The playhead follows your finger for precise positioning.

⇄

Center Panel: Swipe

Swipe left or right on the center panel to switch between pages (Mixer, EQ, Effects, Pads, Sync, Video, Mic/Rec).

⇉

Crossfader: Double-Tap

Double-tap the crossfader to cycle through curve types: Scratch (sharp cut), Cut (quick blend), Linear (straight fade), Constant Power (smooth energy).

💪

Load Button: Long Press

Long-press the music note (load) button to view the current queue and jump directly to any track in the album or playlist.

Transport Controls

Each deck has a transport bar with essential playback controls. These buttons work the same in both portrait and landscape modes.

Button	Action	Notes
`PLAY / PAUSE`	Start or stop playback	After track ends, pressing Play restarts from the beginning
`CUE`	Set or return to cue point	Tap to jump to cue. Hold to preview from cue (releases when lifted). Double-tap to set cue at current position.
`SKIP BACK`	Previous track in queue	Loads the previous track from the current album or playlist
`SKIP FORWARD`	Next track in queue	Loads the next track from the current album or playlist
`REPEAT`	Cycle repeat mode	Off (no icon) → Repeat One (single track loops) → Repeat All (queue loops)
`HEADPHONE CUE`	Toggle headphone preview	Sends this deck's audio to headphones for pre-listening while the other deck plays to the main output
`LOAD (Music Note)`	Open music library	Browse Songs, Albums, Artists, Playlists, Apple Music, or Files. Long-press to view queue.

💡

Headphone Workflow

Enable headphone cue on Deck B while Deck A plays to the audience. Preview and beatmatch the incoming track in your headphones, then use the crossfader to bring it in.

Related Settings

Customize the iPhone interface behavior in iOS Settings > Tremor:

Setting	Options	Description
Turntable Motor Speed	Standard (200/s) / Classic (180/s)	How fast the platter spins back up after release
Platter Feel	Snappy / Medium / Heavy	Inertia and resistance when scratching
Audio While Seeking	On / Off	Play audio during scratch (CDJ-style) or mute (vinyl-style)
iPhone 4 Decks	On / Off	Enable experimental 4-deck landscape mode
Tempo Range	6% / 10% / 16% / 50% / 100%	Maximum pitch adjustment range