Home on Nick Arner

Attempting to build a Copilot-like experience that turns natural language prompts into node graphs What is Stitch?

Building Augmented Reality capabilities for a visual prototyping tool – from AR session management to a multi-platform camera pipeline.

Building RealityKit-powered 3D nodes for a visual prototyping tool, and the container entity pattern that made transforms predictable.

Building CoreML and Vision-powered detection nodes for a visual prototyping tool, and the investigation that fixed bounding box alignment.

I’m the founding engineer of Stitch Design, an open-source prototyping tool.

I recently collaborated with the folks at Chroma (a company I’m an investor in) to build Chroma Swift — a Swift package that brings Chroma’s retrieval system to iOS and macOS applications.

In your app, you may run into times where you want to obfuscate the content of sensitive strings.

Today I open-sourced TiktokenSwift - A Native Swift Wrapper of OpenAI’s Tiktoken Tokenizer.

As part of some recent work, I was working on implementing applying transforms to 3D objects in a Swift app.

The Opus Interactive Audio Codec is an open-source, royalty free audio codec.

In 2024, a portfolio company of mine, Sandbar, asked me for help to build a prototype of their voice-powered agentic app.

Wanted to share some thoughts on lessons learned from doing freelance for the past few years.

Meter is a company that develops IT hardware and software for network infrastructure, catering to environments such as schools, warehouses, and offices.

Last night I went to the Designing for AI event at Notion hosted by Linus Lee.

I moved to San Francisco at the end of a cycle.

There’s been a flurry of recent activity around AI hardware recently - from Humane’s runway debut to the rumoured partnership between OpenAI and Jony Ive, to Tab and to the Rewind Pendant.

AudioKit is an open-source framework designed for audio synthesis, analysis, and production on Apple platforms.

I built the first version of Pocket, an iOS chat app for Urbit.

I was approached by Dusty Robotics to build a prototype of an iPad app that would control their product, the FieldPrinter.

I was the founding engineer of a pre-seed startup called Asteroid.