Prism MIDI Sequencer

Prism is a 16-track AUv3 MIDI step sequencer for iPhone and iPad that turns sparks of inspiration into living, breathing music. It’s built for touch and flow—pair it with your favorite synths, samplers, drum apps, and gear.

Key Features

[ Sequencing Engine ]

• High resolution: 1/32 steps, up to 512 trigs/pattern, swing, polyphony, micro-timing per step

• Elastic timing: per-sequence lengths plus smooth speed changes for real polyrhythm/polymeter

• Per-step control: parameter locks and Step FX

• Playback modes: Standard, Overlap, Trig Legato, Drone

• Capture everything: live record with quantize, retroactive recording (always listening), and tap-in steps

• Human feel & probability: Chance, Every, Hold, Range, Accent

[ Tonal Tracks (Melody & Harmony) ]

• Always in key: scale modes across the app (use built-in scales or create your own)

• Note input modes: Poly, Chord Simple, Chord Multi, Chord Blocks

• Flow modes (musical logic): Standard, Peek, Echo, Melt, Mirror

• Per-Trig Step FX: Velocity, Pitch, Ratchet, Strum

• Multi-Seq: 4 independent sequencers per tonal track to weave interlocking parts

• Import and edit .MIDI files

[ Drum Tracks (Kits & Samplers) ]

• 16 mini-sequencers per drum track with independent settings, FX, and controls

• Modular linking, advanced layering, and Drum↔Tone interactions for shared timing tricks

• Drum profiles for fast kit routing and universal connectivity

• Per-Trig Step FX (drum): Velocity, Length, Ratchet, Flam

[ Modulation, Generative & Creative Tools ]

• 6 LFOs per track (track-tied and CC-tied) for tempo-synced movement and evolving patterns

• Per-track/pattern 16-step Arpeggiator—from classic to experimental

• Harmonizer and Hue Sequencer for chord color and phrase rotation

• Tape-style MIDI Slicer & Looper (per track/pattern) for instant remixing

• Smart randomizers: one-tap generation for drum patterns, sequences, and fx.

[ Performance, Workflow & UI ]

• Scenes, mute profiles, and bar looper to play, capture, and perform.

• Fast edits: copy, paste, multi-select, quick duplicate

• Multi-touch keypad matrix & sequencer for hands-on control

• Light & Dark themes

• Host-aware saving (internal presets + AUv3 state)

[ Hardware & Host Integration ]

• Deep, bi-directional control for Novation Launchpad (Pro, Mk3, Mini, X) and Launchkey Mini MK4 with LED feedback & mappings

• External MIDI in/out/thru, per-track channel routing

• AUv3 works in leading hosts (e.g., AUM, Logic Pro for iPad)

[ Timing & Specs ]

• High-precision engine: 480 PPQN for tight playback at any tempo

• iPhone & iPad AUv3 (MIDI-only; no built-in sounds)

Find more info at sites.google.com/view/prism-midi-sequencer/home

Happy creating, y’all.

—A Mortal Mage