iOS AppsPrivate iPhone vertical slicePrivate implementation evidence and R11 composer proofVerified 2026-07-28

Walnut Signal

A small pocket instrument for making a pattern and learning a signal path by hearing it move.

Walnut Signal is an iPhone-native synthesis instrument that treats the playable surface as the product: a short phrase, direct sound shaping, guided routes, and a compact sequencer instead of an abstract modular wall.

Open live product

Walnut Signal Pattern Performance Composer on an iPhone-shaped instrument surface. — The current composer treats the 16-step pattern as a playable performance surface.

A sequencer may be technically complete while still feeling like a utility. The product had to be reoriented around a playable, learnable musical instrument before more systems were added.

What was built

A phone-composed pattern-performance composer with direct step editing.
Guided musical destinations with an advanced patching path held behind the first interaction.
Local patch behavior, native audio seams, and installed-build evidence awaiting touch and listening review.

Visible receipts

R11 Pattern Performance Composer source and simulator review evidence dated 2026-07-28.
A signed, installed, and launched iPhone build through the repaired local lane.
Explicit remaining human review for touch feel, audible performance, and visual acceptance.

Walnut Signal pattern composer evidence screen. — Direct step selection, phrase control, and transposition remain visible together.

Walnut Signal instrument interface with smoked metal and walnut rails. — The visual language supports a pocket instrument rather than a generic control harness.

Public boundary

Walnut Signal is private implementation evidence, not a released iPhone app, a public demo, a finished audio product, or a claim of compatibility with third-party modular systems.

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