Hi, I'm Jared. I build iOS apps and bring AI models on-device.

I run Haplo — a tiny studio shipping indie iOS apps, open-sourcing libraries for on-device LLMs and diffusion, and publishing iOS-ready quantizations of open models on HuggingFace.

See what I've made → What I'm reading
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Currently shipping at Haplo/ Eight Haplo apps on the App Store/ 11 OSS repos under Haplo, LLC/ 34 model releases on HuggingFace/ iOS · macOS · Swift · on-device AI/ Always reading/ Currently shipping at Haplo/ Eight Haplo apps on the App Store/ 11 OSS repos under Haplo, LLC/ 34 model releases on HuggingFace/ iOS · macOS · Swift · on-device AI/ Always reading/
// where i've worked

Five-ish years building, give or take.

Mostly Apple platforms. Mostly indie. With a day job in the background.

[01]
Haplo, LLC
Founder & engineer. Indie iOS apps, open-source for on-device AI, and 30+ iOS-ready model quantizations on HuggingFace.
2021 — now
→
[02]
eBay
Senior iOS Engineer. On-device AI integrations, Visual Intelligence App Intents, and a patent-pending dynamic UI framework.
2021 — now
→
[03]
L3 Technologies
Software engineering lead on defense systems firmware.
Fall 2020
→
[04]
Huck Adventures
iOS development intern.
Summer 2021
→
// also B.S. Mechanical Engineering, minor Mathematics · Baylor University · 2021
// a few things i'm proud of

A few wins worth keeping a note of.

Small recognitions, mostly from work in and around Apple platforms.

2025
eBay AI Award
For implementing Apple's Visual Intelligence App Intent APIs in the eBay app.
2025
Patent Pending
Inventor of a dynamic, section-based UI system that generates layouts from JSON.
2025
Apple Foundation Model Workshop
Selected to attend a workshop at Apple HQ on foundation models and feature prototyping.
2023
Oregon Innovation Challenge
Winner — grant for an AR platform for creating and sharing interactive presentations.
// stack

Tools I reach for most days.

Mostly Apple-platform stuff, with a fair amount of Python on the side.

Swift SwiftUI UIKit Objective-C Xcode SwiftData Foundation Models Core ML Core Animation Metal ARKit Python TensorFlow llama.cpp GGUF Quantization HuggingFace GraphQL Firebase Git
// building in public

A few recent tweets.

Five highlights from @JC_builds. Scroll →