@hiyokoko

Type-Driven Design in Rust — Patterns I Learned Building Real Desktop Apps

May 25 · 4 min read · Rust's type system is the feature that keeps paying dividends. Every time I've invested in designing types well, the compiler caught bugs I'd have missed in runtime testing. Here are the patterns I ac

Gemini vs Claude vs GPT-4 for Developer Tools — An Honest Comparison After Building With All Three

Apr 28 · 4 min read · I build developer tools — a logcat analyzer, a PDF processor, a terminal assistant. Over the past year I've integrated Gemini, Claude, and GPT-4 into real shipped products. This isn't a benchmark. It'

My $0/Month AI Stack for Building Developer Tools — Gemini, Ollama, and Apple Vision

Apr 27 · 4 min read · I've shipped 7 Mac apps in the past year. Every app has AI features. My monthly AI infrastructure cost: $0. Not "free trial with a credit card on file." Not "free tier that runs out." Actually zero, w

The Complete Gemini API Guide for Developers in 2026 — Free Tier, Models, and Real Code

Apr 25 · 5 min read · I've been building developer tools with the Gemini API for the past year — a logcat analyzer, a PDF tool, a terminal assistant. All of them run on Gemini's free tier. This is the guide I wish I'd had

I Built a Mac App to Fix Android File Transfer — Here's What I Learned

Mar 31 · 5 min read · Why I Built This Late at night, I plugged my Android phone into my Mac. It wasn't recognized. I swapped the cable. Restarted. Still nothing. Sound familiar? Transfer stops halfway — restarting doesn't