Three apps from zero to functional in a day. There are a bunch of existential questions this raises (we know that new Xcode developers are never going to write actual code again, right?), but even with my reasonable skill level it took a looot of effort (8 hours of nonstop prompting and debugging just today, and I forgot to eat) to get what I wanted in the shape that I wanted it.

This is the biggest change to Xcode (and Project Builder) in its entire history, dropped on a random Tuesday

@stroughtonsmith A random Tuesday after the random Monday that OpenAI dropped the Codex app? 😅

(Question inspired by Gruber’s post)

https://daringfireball.net/linked/2026/02/03/openai-codex

OpenAI’s Codex

Link to: https://simonwillison.net/2026/Feb/2/introducing-the-codex-app/

Daring Fireball