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CreatorsEasy1 to 2 weekendsUnder $100Mobile app

Market Day Stock

Makers tap to log sales at craft fairs and see what sold best.

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The idea

Makers selling at craft fairs and markets load their products before the event and tap a big button for each sale. Stock counts update and a summary shows best sellers and earnings per market. Planning the next market stops being guesswork.

Who it is for
Makers who sell at craft fairs and weekend markets
How it makes money
Monthly subscription
Suggested stack
Expo (React Native), Supabase for login and data
Launch cost
Under $100

Your first AI prompts

Paste these into Claude, Cursor or Lovable, in order. Check that each one works before moving on.

PROMPT 1 OF 3

Build an Expo mobile app called Market Day Stock. Makers sign up and add products with name, photo, price and stock count. Create a market event with name, date and booth fee.

PROMPT 2 OF 3

During a market, show a grid of product tiles. Tapping a tile logs a sale with time and payment type (cash, card) and lowers stock. Add undo and a low stock highlight. Work offline and sync to Supabase when back online.

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PROMPT 3 OF 3

After the event, show a summary with sales per product, total revenue, revenue minus booth fee and busiest hour. Compare markets over time. Add an in-app subscription for unlimited events.

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The 10 step playbook

  1. 01Claim your ideaPut your name on it and unlock every prompt and the full playbook. Always free.
  2. 02Domain and nameBrainstorm a short name, check the .com, and register it.
  3. 03Trademark basicsSearch for conflicts before you fall in love with the name.
  4. 04AI build kickoffPaste the prompts below into Claude, Cursor or Lovable, one at a time.
  5. 05Server and hostingPick a host and have your AI walk you through setup.
  6. 06Backend and dataLogins, database and payments, one prompt at a time.
  7. 07Frontend and designScreens, colors and a simple logo that look professional.
  8. 08Go livePut it online, then submit to the App Store and Google Play if it is a mobile app.
  9. 09Marketing planLaunch posts, local outreach and your first 100 users.
  10. 10Launch and growShip it and add your live link to earn the Shipped badge.
Your full playbook for Market Day StockEvery step spelled out for this idea, with the exact prompts to paste into your AI.
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