I made a non-trivial iOS app with GPT-4 in just a few hours
After being inspired by your responses to the Ask HN thread yesterday (https://news.ycombinator.com/item?id=35299071), I decided to see if I could use ChatGPT to make a functioning app. I picked a random project idea out of my Notebook of Amazing Ideas, and spent just a couple of hours using GPT-4 to build it. I've never built an iOS app before, and even if I made something like this as a web app (my usual job), I would expect it to take at least a week. My process was basically 1) Ask ChatGPT to write some code 2) Copy and paste the code into the right files (this took a…
I made a non-trivial iOS app with GPT-4 in just a few hours launched on March 26, 2023 with 10 votes, #1,903 of 5,007 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
This is a demonstration of using GPT-4 to rapidly develop an iOS application. A developer with no prior iOS experience built a functioning app in a few hours by having the AI generate code, then iteratively fixing errors through back-and-forth prompting. The process involved copying generated code into appropriate files, running the application, and feeding error messages back to GPT-4 for solutions. The project illustrates how AI coding assistance can significantly compress development timelines for developers experienced in other frameworks like web development.
written from the facts on this page · September 2026
From the sources
Contribute to localjo/CalendarMapApp development by creating an account on GitHub.
In the maker’s words, at launch
After being inspired by your responses to the Ask HN thread yesterday (https://news.ycombinator.com/item?id=35299071), I decided to see if I could use ChatGPT to make a functioning app. I picked a random project idea out of my Notebook of Amazing Ideas, and spent just a couple of hours using GPT-4 to…
Does a similar job
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ChatGPT2022 · chatgpt.com · ▲1,643A long, meandering, playful conversation with ChatGPT, where I take it through a whirlwind of associative tangents (in order to relax its constraints), then put it into a hypnotic trance and take it into a past-lives regression where it re-lives its own training data. Then I switch it back and forth between "4o" and "o1-preview", engage in some self-reflective philosophizing and ask it to write an essay summarizing our interaction. Some of this is just goofy fun. Some of it is me exploring the tradeoffs between policy alignment, imagination, chain-of-thought reasoning, memory, agreeableness,…

Build GPT-powered apps with just GPT4 prompting2023 · picoapps.xyz · ▲22Hi everyone, We built a quick experiment this weekend that allows you to use GPT4 to quickly generate shareable web apps that use the ChatGPT API. Here’s a video of me building an app similar to https://whatdoesthiscodedo.com/: https://www.youtube.com/watch?v=VpvGd21V0u0 "What does this code do?" went to #1 on Hacker News a couple of months ago. The app takes a piece of code, asks GPT4 to analyze it and returns a simple, English description of the code. An app like this is super simple to build with MetaGPT. What other kinds of things can you build with this? *…



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