Application Portfolio
Apps, not slide decks.
Caplaz is a San Francisco app developer — a one-person software studio. Since 2018, I’ve designed, built, and shipped real apps for iOS, Android, macOS, Apple TV, and Fire TV — the kind you can download today, not the kind that lives in a pitch deck.
Short version: I build it, I ship it to every store that’ll take it, and I stick around to keep it working.
What I do
Cross-platform mobile and TV apps. React Native where it earns its keep, Swift and Kotlin where it doesn’t. iPhone, iPad, Apple Watch, Apple TV, Android phones and tablets, Android TV, Fire TV, macOS. Full lifecycle: architecture, build, App Store review roulette, ASO, TestFlight, and updates that don’t break things.
Display calibration and color science. The weird specialty. I build tools for people who measure screens for a living — pattern generators, patch automation, HDR pipelines. PatternSpace (macOS) and LightSpace Connect (mobile) both come out of this work: color spaces, transfer functions, the unglamorous plumbing between “signal” and “right.”
Smart home, in the open. Home Assistant custom integrations — MQTT, Zigbee, Z-Wave, Matter — built in public, documented like someone will actually read it, tested across versions.
The catalog
Everything I’ve shipped lives here: The App Catalog →
PatternSpace, LightSpace Connect, Clocks in Motion, Ez Bill. Four apps, zero vaporware.
Open source
Some of the work is public. The PatternSpace Swift SDK is open source (Apache 2.0) — the same JSON protocol the ColourSpace and CalMAN integrations are built on — alongside Home Assistant integrations and tools that escaped from client projects.
Work with me
I take on a small number of client projects each year: mobile apps, calibration tooling, smart-home integrations. If your project involves a screen showing the wrong color, a TV remote with too many buttons, or an idea that needs to be in the App Store this quarter — let’s talk.