Prism MIDI Sequencer

iOS Universel / Musique

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
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[ Sequencing Engine ]
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- 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) ]
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- 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) ]
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- 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 ]
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- 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 ]
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- 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 ]
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- 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 ]
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- High-precision engine:
480 PPQN for tight playback at any tempo

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

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

Happy creating, y’all.

—A Mortal Mage

Quoi de neuf dans la dernière version ?

What's New in Prism

64-Trig Mode:
Go from 16 to 64 trigs in a full-screen view built for fast sequencing and p-lock editing. Hold shift and press the full screen button that appears beneath the main sequencer trigs.

Slim Sequencer View:
Drag to a narrow layout for a 32-step view that sits alongside your AUv3 plugin. Sequence and tweak at the same time.

Draw Your Own LFO Shapes:
Draw LFO waveforms freehand. Link the cycle to your sequence length and set loop count — great for risers and sweeps that stay locked to your pattern.

Smoother Pattern & Scene Switching:
Patterns and scenes transition musically now, whether quantized to bar or not. Long-press to preview a pattern or scene, release to snap back.

Drum Randomization:
Randomize a full pattern or just a section. Pick a genre preset, remix what's there, or go fully random.

GM Drum Type Tagging:
Assign a standard GM Drum type to each pad. Randomization and MIDI drum imports use these to map correctly.

Chromatic Drum Keyboard:
Cycle and layer drum pads on a single sequence with the keypad note button. Stack multiple pads, multiple hits per trig, full chromatic range at any position.

Melt Capture:
Hit capture on a melting track to write the results into the sequence.

Step FX + Melt Mode:
Step FX now works on melting tracks.

Drum Layering & Sidechaining:
Layer pads with per-pad velocity offsets. Sidechain support for drums added.

P-Lock Smoothing:
Per-trig parameter lock smoothing for more natural modulation.

Simpler Piano Roll:
Drag to select, drag to move, two-finger drag to resize.

Bug fixes, CPU improvements, and visual cleanup throughout.