Built by Yohann Hemery

An IT professional and independent developer exploring practical tools and creative experiments across productivity and chess.

This space is where ideas are tested, refined, and occasionally shipped.

A year ago I had built one app. What that first one taught me is how little of an app is the app — signing, store declarations, three languages, privacy pages, a fourteen-day closed test that has nothing to do with code. So the next one reused what the first had learned, and most of it is now packaged: audio, motion, localization, dialogue, tip jars, consent and footers, as kits that ship inside more than one app. Alongside them sit written playbooks for the jobs that repeat — settings screens, launch screens, tests, builds and delivery, copyright, this site. Each app costs less than the one before it, which is the only honest measure of whether any of it was learned.

The other half of the year was learning to run the work rather than just do it: one written list per project, one release pipeline every app walks, and decisions recorded where the next session can find them — the habit that comes from losing an evening to a question you have already answered. Still plenty left to learn, but there is a difference between having built an app and knowing how to ship one. The full list is under Dev Tools.