Yes, despite being an AI doom-speaker, I tried using a app-builder to make a simple, social-media-like, private, journalling web app.
This post explains what I did and why, and outlines the development process I took, including the point at which I decided the AI wasn't up to it and started making it manually. 🤷
https://rosswintle.uk/2026/01/building-a-1-person-social-media-web-app-with-llms-ai/
The app has no instructions, but you can try it out. It’s all private local data. No login. You can see it at https://yousky.veryuseful.app/