App Builder KingApp Builder King

Free planning tool

Free app project brief generator

Turn a vague idea into a clear, structured brief you can paste into an AI app builder, hand to a developer, or keep as a planning doc. It runs entirely in your browser — nothing is submitted, saved, or sent anywhere.

Back to the Lovable review

How it works

  1. Fill in the worksheet

    Start with your target user, the one main task this version should complete, and three essential features. Keep each line short and concrete.

  2. Add data, roles, and scope

    Note what data the app stores or shows, who can see or change what, how you'll know the version works, and what to deliberately leave out for later.

  3. Copy your structured brief

    Use the Copy button (or select the preview text) to get a plain-text brief you can paste into a prompt, a doc, or share with whoever is building.

Your brief worksheet

Fill in the fields below, or tap Load example to see a realistic completed brief. Your entries stay in this browser session; nothing is submitted.

Who is the first person this serves?

The single job this version should complete

What information the app stores or shows

Who can see or change what

How you'll know this version works

What to defer for later

Your entries stay in this browser session; nothing is submitted.

Generated brief preview

If the copy button doesn't work in your browser, you can select this text and copy it manually.

APP PROJECT BRIEF
======================

Target user:
  (not specified)

One main task:
  (not specified)

Essential features:
  1. (not specified)
  2. (not specified)
  3. (not specified)

Data needed:
  (not specified)

Access roles:
  (not specified)

Success criteria:
  (not specified)

Out-of-scope features:
  (not specified)

— Drafted with App Builder King. Planning prompt, not a tested build.

FAQs about defining scope