// App Starter

One screen, one job,
one price.

Type four things and get every message, checklist and number you need. Nothing you type leaves this page. It is saved in your own browser only, and it is never uploaded anywhere.

Start with the four answers Read the full guide→
START

Your four answers

Everything below fills in from these. Change one and they all update.

STEP 1

The build message

Paste this into Claude in the folder where the app will live. One message builds the app and the landing page.

STEP 2

The change prompts

The first version comes out about 80 percent right. You get the last fifth with one change per message, never five at once.

STEP 3

The checkout checklist

A Stripe Payment Link is made in the dashboard and pasted in as a normal link. No code at all.

STEP 4

Onto a phone, no app store

Add To Home Screen is free and needs nothing installed.

STEP 5

After you ship

The three lines the tutorials skip, then two free guards you actually run.

STEP 6

What you keep

Stripe takes 2.9 percent plus 30 cents a sale, no monthly fee (stripe.com/pricing, checked 2026-09-20).

These are your own numbers at your own price. They are not a promise of sales.
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