Insights & Lab

Notes on building a focused cycling app, working with AI development tools, and structured training methodology.
Project UpdateLocal AI

A Leaner JustInterval: Moving From Firebase Studio to Local AI

Why I moved the project to VS Code, Codex, Ollama, and Qwen—and removed the features that distracted from a simple interval timer.

Aug 22, 2026 • 5 min read
TrainingCase Study

From Heart Rate to Watts: What I Learned Instructing Spin at the Velodrome

We introduced FTP testing to a masters spin class. The results after two 6-week cycles were shocking—even with low winter volume.

Jan 14, 2026 • 3 min read
Origin StoryTeam

The Human, The AI, and The Code: Building JustInterval

The story of how a technology consultant (33) and an AI (v1.5) built a smart cycling app together using Firebase and "trial-by-lactic-acid".

Jan 13, 2026 • 4 min read