OpenAI just killed the worst part of building iOS apps with AI. The new Codex "Build iOS Apps" plugin can now: → run your app in an in-app browser → open SwiftUI previews → hot reload edits all without leaving Codex. No more copy-paste-build-screenshot loop. The agent sees what... it ships. This is the loop indie devs have been begging for.show more

This feature is literally convincing me to switch from claude to codex 😭

You should work with 2 because GPT is great for planning and for code claude better just planning your app

For my workflow right now, claude’s doing everything. I am still figuring out because i am kinda addicted to claude, so am too lazy to switch workflows or trying anything new. I will do it for sure this time.

This does not change the fact for me, that even Claude Sonnet is more capable for iOS apps than Codex.

Both greate

am I right here if I want to get started?

The worst part of building iOS apps is AppStore listing

>SwiftUI

we already shipped this and generates way better ui

does this work for fully native SwiftUI apps? 👀

Where can I download the plug-in? Don‘t you need to install it?

Just update codex

Thanks! It works perfectly now!

Good luck Mr :)

is there a plugin for android?

No they didn’t, @Baconbrix did

Never needed to copy/paste. You could always just point Codex / Claude to your Xcode project directory

I haven’t been able to get it to respond this fast. It took ages and then never worked. Any known issues?

Just update codex

Good to know !

We killed it a long time ago with AppGen. The UI design that Codex creates is horrendous.

Exactly what I just looking for!

That's amazing! So I finally can save my computer storage from the simulator…

Does this work for React Native apps?

Very Nice! More and more people can create their own iOS apps very easy

WOOOHOO! This brings our mobile app much closer to fruition! I couldn't stand switching from Xcode to Cursor with screenshots as context!

the worst part of building iOS apps is dealing with app store submission, certs, approvals, device registration 😂

@grok is this skill/tool specific to Codex or can it be used with Claude Code as well?

I want this for my expo app

I think Expo already exists

React native?

Agent 能看到自己交付的结果，这一步很关键。Codex App 的价值也在这里：不是只写代码，而是把测试、预览、修正放进同一个循环里。相关拆解：

You still need to pay the $100 Apple developer fee for your app to work, right?

I have to admit that Codex's Build Mac OS plugin is very convenient and easy to use. I hardly have to do anything.

Can it use camera and push notification ?

"the agent sees what it ships" is the key shift. everything before this was just autocomplete with extra steps.

yeah and it still loads Simulator App, and multi-annotations are not possible... and eats lots of tokens to open

Does this work for iMessage apps too?

The durable part is the feedback loop: run app, see preview, edit, hot reload, verify. Coding agents get useful when the review artifact is inside the loop instead of pasted back as screenshots/errors later. What result does the plugin return to the agent after a run?

You can run on device too? Like Replit/expo integration?

The agent finally sees what it ships.

awsome

The "agent sees what it ships" loop is the right direction. Worth noting this capability has been available in other harnesses for a while. Been running autonomous front end test loops with Playwright MCP inside my own agent workflows, the agent builds the UI, takes the hat of a real user, clicks through it, finds what breaks, fixes it, loops again. No human in the loop for the basic validation pass. This Codex plugin formalizes that pattern and makes it accessible to a much wider audience, which is the real value. The capability existing is one thing. Having it work out of the box without building it yourself is what actually changes who can use it.