Build apps & tools: 33 real cases

Turn a chore spreadsheet into an app for twin 9-year-olds with Claude Code

Jesse Spevack's first Claude chore app became whack-a-mole bugs. A rebuild with Claude Code, a requirements doc and reviews worked.

Build a bedtime story audio app on weekends with Claude Code

Robin Singhvi built Gramms, an audio bedtime story app, on weekends with Claude Code, from React Native to App Store submission.

Replace Google Forms with a custom customer app for a one-person business with Claude Code

A one-person business swapped seven Google Forms for a Claude Code app that checks plates and addresses; admin fell to 4 hours a week.

Import every saved Instagram food reel into a self-hosted recipe app with a pipeline Codex wrote

Codex wrote a pipeline that transcribes saved Instagram food reels and imports them as recipes into Mealie.

Build a blog feature by voice with Codex while cooking

Talking to Codex in voice mode while cooking, the author got a Django newsletter archive with four importers and a pull request.

Build a terminal-to-HTML sharing tool with Claude Code for web

Claude Code for web built a tool that turns pasted terminal output into a shareable link, recorded start to finish in 11 minutes.

Write and ship a complete Datasette plugin with Claude Code

Claude Code wrote every line of code and every test for the datasette-os-info plugin with minimal prompting, and the author shipped it.

Generate a colophon page for a GitHub Pages site with Claude Code

Claude Code wrote a script that builds a colophon page of every tool and its commit history, and wired it into the GitHub Pages deploy.

Vibe-code a 3D town-building game with Claude Code

From one informal prompt, Claude Code built a working 3D city-building and driving game in about four minutes.

Reported by One Useful Thing:Working game in about four minutes