Summary
This tutorial from The AI Advantage shows how to recreate a paid app as a free, customizable version using an open-source GitHub repository called Reverse Engineer Anything. The presenter points an AI assistant at the repo, names the application to rebuild, and lets the model work backward from the finished product to produce a working version.
The video walks through the setup step by step: creating a project in the ChatGPT desktop app, granting it access to a local folder, pasting the repository link into a new chat, and prompting the model with a simple request to make a named app. The same approach works with Codex, the Claude desktop app, and Claude Code, and the presenter recommends choosing a higher model setting and keeping approvals on for safety.
Examples include a screen-drawing tool called AIA Ink, built in about two minutes as a replacement for the paid Screen Brush, and a copy of the polling app Slido hosted through ChatGPT’s sites feature. The presenter also covers customizing the result, such as removing unneeded features and making the toolbar background transparent for demos.
📺 Source: The AI Advantage · Published October 29, 2026
🏷️ Format: Tutorial Demo
