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Thomas Ricouard

@Dimillian • 54,913 subscribers

Developer Experience, Codex @OpenAI Builder, Entrepreneur, iOS/macOS, Swift/SwiftUI & more

Shorts

If you update to the latest ChatGPT iOS app version, we have a very cool new feature from Philipp Spiess. Codex visualisation now also works on iOS; you can ask for all kinds of graphs and custom content to be built on the fly!

If you update to the latest ChatGPT iOS app version, we have a very cool new feature from Philipp Spiess. Codex visualisation now also works on iOS; you can ask for all kinds of graphs and custom content to be built on the fly!

106,950 Aufrufe

Claude Code one shotted this, beautiful.

Claude Code one shotted this, beautiful.

287,873 Aufrufe

I don’t know if you noticed, but the last few versions of Codex Remote went from jumpy scrolling to smooth streaming. I really like how it turned out. And also, the best way to test and debug that? Ask Codex for an endless wall of text.

I don’t know if you noticed, but the last few versions of Codex Remote went from jumpy scrolling to smooth streaming. I really like how it turned out. And also, the best way to test and debug that? Ask Codex for an endless wall of text.

40,753 Aufrufe

I was about to work (Codex was about to work) on thread/resume optimisation, but I got sidetracked by adding a zoom transition on the plan card. It sounded much more important.

I was about to work (Codex was about to work) on thread/resume optimisation, but I got sidetracked by adding a zoom transition on the plan card. It sounded much more important.

31,938 Aufrufe

Codex can algo get better at SwiftUI animations with the right skills, like the one available in the Build iOS Apps plugin. For example, ask for a scroll reveal animation!

Codex can algo get better at SwiftUI animations with the right skills, like the one available in the Build iOS Apps plugin. For example, ask for a scroll reveal animation!

48,423 Aufrufe

We’ll definitely need a 26.0.1 ASAP

We’ll definitely need a 26.0.1 ASAP

119,308 Aufrufe

Faaaaaaaasssst and smooth git diff + new switch button

Faaaaaaaasssst and smooth git diff + new switch button

57,642 Aufrufe

It’s crazy what you get for free using the right iOS 26 API

It’s crazy what you get for free using the right iOS 26 API

79,805 Aufrufe

So now I can self-improve the iOS app from my computer to my iPhone and deploy it. I can ask for changes and test them live. Without touching my computer. Can you believe that?

So now I can self-improve the iOS app from my computer to my iPhone and deploy it. I can ask for changes and test them live. Without touching my computer. Can you believe that?

40,467 Aufrufe

One of the best things about this Codex app update is how good it is to work with other things than code! The app can now preview all kinds of documents natively, including spreadsheets!

One of the best things about this Codex app update is how good it is to work with other things than code! The app can now preview all kinds of documents natively, including spreadsheets!

25,981 Aufrufe

They refined this even more. Honestly this is one of the most insane piece of software ever.

They refined this even more. Honestly this is one of the most insane piece of software ever.

53,525 Aufrufe

I have no clue what is it doing Monologue Like does it allow to always record in the background??

I have no clue what is it doing Monologue Like does it allow to always record in the background??

25,090 Aufrufe

I've played a bit more with Codex + making games. This is a little Vampire Survivor inspired games, all with Codex + ImageGen and a small spec from me! CodexSurvivor!

I've played a bit more with Codex + making games. This is a little Vampire Survivor inspired games, all with Codex + ImageGen and a small spec from me! CodexSurvivor!

12,886 Aufrufe

Never forget that this is the best UX you can get because Apple can’t bother to make text selection work on SwiftUI Text.

Never forget that this is the best UX you can get because Apple can’t bother to make text selection work on SwiftUI Text.

29,137 Aufrufe

Those new navigation transitions in #SwiftUI are interesting. Only .zoom is available for now.

Those new navigation transitions in #SwiftUI are interesting. Only .zoom is available for now.

39,930 Aufrufe

Buttery smooth, SwiftUI, social media app.

Buttery smooth, SwiftUI, social media app.

15,380 Aufrufe

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So I asked for 5.6 for good "combat feedback". Bro this is way too intense omg. I feel back for the little critters too now. But the story is that Sol is really good at translating an intent into actual gameplay!

So I asked for 5.6 for good "combat feedback". Bro this is way too intense omg. I feel back for the little critters too now. But the story is that Sol is really good at translating an intent into actual gameplay!

Thomas Ricouard

45,569 Aufrufe • vor 3 Tagen

I've decided to let 5.6 run a few more turns with my game while steering into the art style and gameplay I wanted, and I'm very impressed. It got my shader right, the parallax background, the skybox. Everything is just fitting so well together!

I've decided to let 5.6 run a few more turns with my game while steering into the art style and gameplay I wanted, and I'm very impressed. It got my shader right, the parallax background, the skybox. Everything is just fitting so well together!

Thomas Ricouard

23,867 Aufrufe • vor 3 Tagen

My Codex /goal that has been running for like 40 hours that is now 100K+ lines of code now is a pure Swift Doom source port. It'll be the first, source accurate, software renderer for Doom that is fully in Swift. No OpenGL, Metal, SceneKit, no nothing. Just Swift.

My Codex /goal that has been running for like 40 hours that is now 100K+ lines of code now is a pure Swift Doom source port. It'll be the first, source accurate, software renderer for Doom that is fully in Swift. No OpenGL, Metal, SceneKit, no nothing. Just Swift.

Thomas Ricouard

167,188 Aufrufe • vor 2 Monaten

So this game is real now, fully built with GPT-5.5. I told Codex to use the imagegen skill to generate a reference UI and sprites, and used the Build macOS Apps plugin to build the app for a native retro fantasy labyrinth game! Adjusted the UI in a few prompts and here we are!

So this game is real now, fully built with GPT-5.5. I told Codex to use the imagegen skill to generate a reference UI and sprites, and used the Build macOS Apps plugin to build the app for a native retro fantasy labyrinth game! Adjusted the UI in a few prompts and here we are!

Thomas Ricouard

144,881 Aufrufe • vor 2 Monaten

Let's break it down. This time, I started with an empty Xcode project. Claude 4 one-shotted a fully working iOS app that can list and create posts (with a good UX) and read/write to a database. It compiled the app and took a screenshot to confirm that it's working. One prompt.

Let's break it down. This time, I started with an empty Xcode project. Claude 4 one-shotted a fully working iOS app that can list and create posts (with a good UX) and read/write to a database. It compiled the app and took a screenshot to confirm that it's working. One prompt.

Thomas Ricouard

163,573 Aufrufe • vor 1 Jahr

Telemetry is a very important concept when working with agents; it allows them to work autonomously for longer. Watch Codex build an iOS onboarding and checkout flow, drive it using XcodeBuildMCP and debug analytics events using telemetry the agent added itself.

Telemetry is a very important concept when working with agents; it allows them to work autonomously for longer. Watch Codex build an iOS onboarding and checkout flow, drive it using XcodeBuildMCP and debug analytics events using telemetry the agent added itself.

Thomas Ricouard

45,736 Aufrufe • vor 3 Monaten

Yep GitHub Copilot for Xcode is pretty wild!

Yep GitHub Copilot for Xcode is pretty wild!

Thomas Ricouard

163,762 Aufrufe • vor 1 Jahr

I think you need to understand how cool and good the Codex sub-agent feature is. For example, here is the perfect task for parallel agents: cleaning and refactoring components based on a skill. So I ask Codex to split the work to speed things up.

I think you need to understand how cool and good the Codex sub-agent feature is. For example, here is the perfect task for parallel agents: cleaning and refactoring components based on a skill. So I ask Codex to split the work to speed things up.

Thomas Ricouard

55,852 Aufrufe • vor 5 Monaten

I don't think people understand how good iPadOS 26 is or how well we have it with the SwiftUI API. TabView is now the API you want to use for your root container. It adapts almost perfectly to any window size. And it's easier than ever to make adaptable apps.

I don't think people understand how good iPadOS 26 is or how well we have it with the SwiftUI API. TabView is now the API you want to use for your root container. It adapts almost perfectly to any window size. And it's easier than ever to make adaptable apps.

Thomas Ricouard

72,989 Aufrufe • vor 10 Monaten

Here is Codex building TetrisBar, a Tetris for macOS that you can play anytime, right in your menu bar! It's using our new Build macOS Apps plugin! You can learn how to use it here:

Here is Codex building TetrisBar, a Tetris for macOS that you can play anytime, right in your menu bar! It's using our new Build macOS Apps plugin! You can learn how to use it here:

Thomas Ricouard

21,369 Aufrufe • vor 3 Monaten

Codex Monitor now fully supports the Codex collab feature; it can spawn any number of new agents at your request. Here is a demo! Orchestration is just a prompt and a bit of UI now!

Codex Monitor now fully supports the Codex collab feature; it can spawn any number of new agents at your request. Here is a demo! Orchestration is just a prompt and a bit of UI now!

Thomas Ricouard

26,788 Aufrufe • vor 6 Monaten

We're definitely entering a new age of native iOS engineering. This is so much more flexible than stupid UI and rigid UI testing scripts. Next I'll try to build a new feature and tell the agent to build and run until it's working good.

We're definitely entering a new age of native iOS engineering. This is so much more flexible than stupid UI and rigid UI testing scripts. Next I'll try to build a new feature and tell the agent to build and run until it's working good.

Thomas Ricouard

44,782 Aufrufe • vor 1 Jahr

Seems like my Codex /goal for porting the Doom engine to pure Swift (100% software rendering) is almost done! I can now save/load, music, play all the episodes and levels of Doom I + II

Seems like my Codex /goal for porting the Doom engine to pure Swift (100% software rendering) is almost done! I can now save/load, music, play all the episodes and levels of Doom I + II

Thomas Ricouard

10,243 Aufrufe • vor 2 Monaten

Codex with GPT-5.4 in fast mode built that in 6 minutes. Procedural world generation + rendering in an offscreen buffer, then rendering the scene in matrix-style glyph + walking around. Running in the browser.

Codex with GPT-5.4 in fast mode built that in 6 minutes. Procedural world generation + rendering in an offscreen buffer, then rendering the scene in matrix-style glyph + walking around. Running in the browser.

Thomas Ricouard

16,100 Aufrufe • vor 4 Monaten

When it works, the concentric corner radius SwiftUI API is pretty amazing 😂

When it works, the concentric corner radius SwiftUI API is pretty amazing 😂

Thomas Ricouard

16,593 Aufrufe • vor 6 Monaten

And now I have another trick on how to expand the SwiftUI navigation bar on both iOS 18 (and below) and iOS 26

And now I have another trick on how to expand the SwiftUI navigation bar on both iOS 18 (and below) and iOS 26

Thomas Ricouard

18,754 Aufrufe • vor 10 Monaten

I'm trying something new. Here is a quick video on how I use Cursor to build and run iOS apps. Let me know if you like it.

I'm trying something new. Here is a quick video on how I use Cursor to build and run iOS apps. Let me know if you like it.

Thomas Ricouard

17,666 Aufrufe • vor 10 Monaten

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