# FirstThree

> FirstThree (https://firstthree.app) is a free web tool that turns a one-sentence app idea into a tiny v1 (MVP) build plan plus exactly three copy-paste prompts, in build order, for an AI coding tool: Cursor, Lovable, Bolt, Replit or ChatGPT. No sign-up.

## Who it's for

- Beginners and non-developers "vibecoding" their first app with an AI builder.
- Developers who want a quick, tight v1 scope and starter prompts before opening Cursor or another AI tool.
- Anyone whose AI-built app stalls because the first prompt asked for too much.

## What you give it

- One sentence describing the app idea (8 to 300 characters).
- The tool you build in: Cursor, Lovable, Bolt, Replit or ChatGPT.

## What it outputs

1. App name and a one-line description.
2. **v1 includes**: the 3 to 5 things the first version must do.
3. **Skip for now**: features to leave out of v1, each with a short reason (e.g. accounts, payments, notifications).
4. **Simplest stack**: front end, back end, data and hosting suited to the chosen tool, and why.
5. **Main screens**: 2 to 4 screens and what each is for.
6. **Three prompts in build order**: (1) set up and build the core screen, (2) make the main feature real with saved data, (3) polish and finish v1. Each prompt says what not to build yet and ends with a "done when" check.

## How the prompts differ per tool

- Cursor: scaffold a small local project (e.g. Vite + React + Tailwind) and explain how to run it.
- Lovable: describe screens and behaviour; Lovable handles setup and publishing.
- Bolt: browser-only app that runs and deploys with no configuration.
- Replit: uses Replit's built-in server and database when a backend is needed.
- ChatGPT: a single index.html file that opens with a double-click.

## Facts

- Price: free. No account or sign-up.
- Generated with Google Gemini. Fair-use limits apply per person, plus a daily cap on total plans.
- Ideas are not stored; the site keeps only anonymous daily counts (no IPs, no idea text). Privacy: https://firstthree.app/privacy
- Optional weekly newsletter (double opt-in): one vibecoding tip + one featured idea-to-plan.
- Share links: `https://firstthree.app/?idea=...&tool=lovable` prefills the form; add `&go=1` to generate immediately.
- X / Twitter: https://x.com/firstthreeapp

## Links

- [FirstThree](https://firstthree.app/): the tool
- [Example output](https://firstthree.app/llms-full.txt): a full sample plan with all three prompts