Stellarizer
Christopher Bryant
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About this app
Stellarizer turns your musical ideas into new directions. Capture a phrase, draw a source, or start with a preset, then shape variations and explore an entire field of related patterns. Hear your patterns immediately with the optional built-in preview sound in the standalone app. The Get Started guide introduces playback, presets and MIDI routing. When you want another sound, connect Stellarizer to an instrument on your iPad. CAPTURE AND CREATE Record MIDI from the on-screen keyboard or a connected MIDI source. Create and edit your own phrases, import MIDI, and work with monophonic lines or polyphonic material. Set capture length, sequence length and quantization for your workflow. SHAPE YOUR IDEAS Explore pitch, rhythm, density, velocity and duration. Turn on the Grid for step columns and pitch lanes, with pinch to zoom. Use musical limits and locked notes to guide the result. Apply Legato to your source or variation, or enable it for generated patterns. Dice preserves intentional note durations as you explore. EXPLORE THE PATTERN PLAYGROUND Generate eight related patterns from one source. Audition discoveries, pin favorites, reroll individual patterns and send a result back to Shape for further exploration. PERFORM IT YOUR WAY Play any pattern Forward, Backward, Ping-Pong, Random, Random Walk or Scatter, at speeds from ÷16 to ×16. The notes stay as you wrote them. A cycle rail and glowing notes show exactly what is playing. TAKE A PATTERN INTO ORBIT Let a pattern evolve away from Home and return over 4, 8, 16 or 32 loops. Choose your distance, follow the moving constellation and keep a discovery along the way. Shape changes and rerolls can join the journey at musical boundaries. SAVE AND CONTINUE Browse factory presets, save your own, revisit recordings and export MIDI through the iPad file workflow. Replay Get Started or the Full Tour from Settings whenever you need guidance. STANDALONE AND AUv3 Stellarizer is a landscape iPad MIDI sequencer. Standalone includes optional preview sound and MIDI routing to other instruments. As an AUv3 MIDI processor, it sends notes to a connected instrument while the host controls transport and tempo. The built-in preview sound is available only in standalone. AUv3 use requires a host that supports MIDI-processor extensions and MIDI routing to an instrument. An external MIDI keyboard is optional.
What's new
Version 1.1.0 · Nov 12, 2026
Stellarizer 1.1 brings new ways to hear, perform and shape your ideas. • Built-in preview sound: hear an example or play your patterns immediately in the standalone app, without connecting another instrument. • Beginner Mode: a guided introduction to playback, presets and MIDI routing. • Direction: play a pattern Forward, Backward, Ping-Pong, Random, Random Walk or Scatter without changing its notes. • Speed: from ÷16 to ×16, locked to the tempo. • Orbit: take a pattern on an evolving journey and return Home over 4, 8, 16 or 32 loops. Keep discoveries along the way, and export the whole journey as one MIDI clip. • A gold cycle rail shows where you are in the pattern, and every note glows as it plays. • Grid: edit with step columns and pitch lanes. Fold the lanes to your scale, pinch to zoom and drag with two fingers to scroll. • Randomize: a new sequence from the notes on screen, or new velocities or durations for the notes you are editing. • Legato: connect notes in your source or variation, or enable it for generated patterns. • Tighter MIDI timing at every audio buffer size, and steadier playback in AUv3 hosts. Presets and projects from Stellarizer 1.1 for Mac and Windows now open on iPad. Stellarizer remains an AUv3 MIDI processor. In a host, route its MIDI to an instrument for sound.
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