On Thursday evening at 20:40 I opened an empty folder with a short note: remind me to take my pills, let me confirm I took them, keep a history, count what is left at home. On Friday at about 16:00 the app was submitted to App Store review, for iPhone, iPad and Mac, in four languages. On Monday morning Apple approved it.

The app is Vzato ("taken" in Czech), and it is in the App Store now. It is free, open source under MPL-2.0, has no server and no accounts, and syncs through the user's own iCloud. The code is on GitHub .

I built it with Claude Code. This post is about what that looked like in practice: why I built it, how the day went, what I did and what the AI did, and what it means to write and ship an app like this now. It wasn't magic, and it wasn't a toy either.

Why another medication reminder

There are plenty of them. I tried several before this, and none of them worked for me. Some I did not like. Some I simply did not understand how to use.…