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ARC-24 Documentation

ARC-24 Documentation

ARC-24 is a multitrack groovebox app for iPad and iPhone. Play in-key pads, layer eight synth, sample, or drum parts, shape your sounds, mix, build songs from multiple loops, and export finished audio.

Quick Start

Use the sidebar to browse topics, or start with Getting started.

What you can do

  • Play in Notes, Chords, Drums, or Sampler mode
  • Record layered loops on eight tracks (synth, sample, or drum pads)
  • Tighten timing with quantize and humanize
  • Design sounds — the Sound Design Track pane follows the selected track's instrument (synth voice, drum kit + pads, or sampler settings); all channel FX (tone reverb, Atmosphere, Motion/Bloom, Character, delay, inserts) in Mixer → FX
  • Latch notes in Notes mode with Hold
  • Mix with faders, pan, mute, solo, EQ, and FX (reverb, delay, inserts)
  • Switch loops live from the Mixer during performance
  • Build songs with multiple loops and a full arrangement
  • Export as WAV or AAC
  • Play from a MIDI controller — USB or Bluetooth; Notes, Drums, and Sampler modes
I want to… Read
Import or record your own samples Sampler
Record my first loop Getting started
Use triads, 7ths, and sus chords Chords
Use the arpeggiator (ARP) Arpeggiator (ARP)
Latch sustained notes (Hold) Hold mode
Add a reverb tail on a track Mixer → FX → Atmosphere
Shape channel effects (delay, inserts, tone reverb) Mixer → FX
Edit the synth voice only Track sound design
Record drums or synths Recording
Connect a MIDI keyboard or drum pads MIDI input
Fix late notes over Bluetooth Troubleshooting
Switch loops while playing Live loop scenes
Export my music Export
Save an export to Files Export → Saving the file
Sync songs between devices Songs, loops & arrangement · Troubleshooting
Understand trial and unlock Purchasing
iPhone on main performance screen (Notes mode, pad grid, control bar, ARC-24 header). Dark background, orange accents.
iPhone on main performance screen (Notes mode, pad grid, control bar, ARC-24 header). Dark background, orange accents.

Requirements

  • iOS 18.1 or later
  • iPhone or iPad
  • Optional: iCloud Drive for syncing songs between devices (open the song list or return to the app to refresh)