TailorApps
Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

TailorApps (the app itself is called Tailor) is a desktop app that learns how you work and builds the apps you wouldn't naturally think to ask for. Every AI App builder starts with a prompt, which only helps people who already know what software they need. Tailor starts from what you actually do. With your permission it notes which websites and apps you use (never what the user types), and suggests apps that remove it. Each suggestion shows evidence and what the app would be permitted access to. Four Meta Muse agents are used to build the app: The Observer contributes important user activity patterns, the Designer proposes and plans the app, the Builder writes the code and fixes its own build and runtime errors, and the Tester uses the finished app the way the user would, clicking and typing in a hidden copy before its displayed to the user. The app then installs as a real desktop app with its own window, icon, and Start menu entry, but it can still be managed and uninstalled from the launcher. You can ask for changes in plain words, and set goals (for example, spend less time in video games) that new ideas will aim at.