Morten Just Profile picture
Mar 15, 2023 โ€ข 12 tweets โ€ข 4 min read โ€ข Read on X
hey gpt4, make me an iPhone app that recommends 5 new movies every day + trailers + where to watch.

My ambitions grew as we went along ๐Ÿ‘‡
Here's version 1. Had to ask it to fix 2-3 of its own bugs, which it did (and apologized). The app compiled and did what I asked:
I asked it to clean up the messy UI Image
With all that new space in the sheet, I asked it to add movie trailers, thinking "yeah, right"
Not knowing if the data was at all available, I asked it to show available streaming services.

What was cool was the way it told me to update the code: instead of giving me the entire app over and over, it chose sections and even commented unrelated code out Image
Just like that, I now have an app I'm pretty sure I'm going to use again tomorrow.

I didn't consult the API docs once. I didn't even pick the API in the first place. I did help gpt4 out a few times.

Like a good coworker.

Here's the entire app
gist.github.com/mortenjust/315โ€ฆ
Language models that code are indeed "infinite app stores"

Now we just need infinite product managers to give us the apps we _really_ need. Wait, could it .. ? ๐Ÿ‘‡

๐Ÿคท๐Ÿป Image
whoops, wrong video. This one instead:
Next up, an app icon, by Midjourney. It's a remote with built-in popcorn Image
Just submitted the app to the App Store Image
Thread's getting long, follow along on @mortenjust where Apple responds to the App Store submission

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More from @mortenjust

Mar 24, 2023
I asked GPT-4 to build me a complete app from scratch - and now it's on the store. Link in ๐Ÿ‘‡ Image
The first version took 5 minutes. See the full story here:
Read 7 tweets
Mar 15, 2023
I asked gpt4 to spend 5 minutes working with me on an animation for Rotato's landing page

We did it in 3 steps ๐Ÿ‘‡๐Ÿป
"I want a subtle html canvas animation on a solid background. It should be a number of small rectangles in the same aspect ratio as a phone."
"Not bad! I have a few adjustments

1. Make the corners of the shapes rounded
2. Make the smaller ones move slower so we understand they are in the background
3. Make the bigger ones slightly blurred so it looks like a camera focus effect"
Read 7 tweets
Feb 14, 2023
Watching AI "type" word by word gets kind of boring fast, and it may set the wrong expectations as in "these are facts." What else could it look like?

1. The AI choosing among millions of tokens in a blur, then sharpens as it picks a random token
2. Animating the tokens from the bottom could make it look more dreamy. It's literally "coming up" with stuff (or "making up", rather)
3. A familiar loading sequence from train stations: split flaps
Read 8 tweets
Feb 13, 2023
1 result without GPT, 2 results with GPT. Which one do you prefer? Google shows the scores and logos in a glanceable wayNeeva leads with a narrative and follows up with a definitioYou's chat interface doesn't seem aware that the game has en
Now imagine walking on the street while it's raining and you're a little late
Here's Bing, where the chatbasically repeats what the the one-box just said, in prose, but this time unglanceably so
Read 4 tweets
Jan 30, 2023
Next level reflection?
I'm pulling frames from the webcam through a warp kernel on the GPU, then desaturate, blend, opacity etc. No idea how the kernel stuff works, just stole it from @FlexMonkey's book
The OSX Jaguar raster lines are from a handy Core Image generator, most likely related to how those stripes were drawn back in the day.

I extended SwiftUI's Color so I can do Color.white.striped(with: .gray) and fill any shape with it in one line
Read 6 tweets
Jan 25, 2023
Might have gone too far. 5 stupidest things in ๐Ÿงต
The perspective effect comes from transforming a simple custom shape's bezier curves downwards
The perspective drop shadow is a rotated black rectangle with blur
Read 8 tweets

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