chern0.dev

Work

Problems, the approach and what was measured. Employer work is described at the level of capabilities only: no customers, vendors, prompts or internal numbers.

My products
Production AI at a US video-messaging SaaS
Client work
Lab

Prototypes and experiments. This is where most of my techniques get tested before they reach a client.

Glyco
Nutrition coach for insulin resistance. The LLM identifies the food; code does every calculation. Built in a day with a tool-using agent.
AgentDock
macOS notch app that supervises Claude Code, Codex and OpenCode, reading each agent’s state from its terminal screen.
Livecap
On-device live captions for macOS 26: Apple SpeechAnalyzer and ScreenCaptureKit behind a Rust GPUI overlay.
Remove BG for Safari
Segment Anything running inside a Safari extension without SharedArrayBuffer. It became Clearcut’s Smart Brush.
granapp.ba
Supermarket PDF catalogs turned into structured offers by LLM extraction with confidence scores and a human review queue.
Photco
Old-photo restoration app for Balkan users, with a credit price ladder held to an 80% margin.
Lens
Select any screen region on macOS and ask about it. Generated shell actions run inside an allowlist sandbox.
Kids’ science films
Short AI-produced science films in Bosnian, with a fact-check log and loudness checks.