Build Your Card App Start free

For trading card collectors, sellers and shops

Built by a non-developer, for non-developers.

Build your own trading card app for iPhone and Android with Claude: a collection tracker, a shop app, a tool for card shows. One small step at a time, even if you've never used a computer.

Where should you start?

Your app is for
Your computer
Have you used a computer before?
Do you have the Claude app on your computer, with a paid plan (Pro or Max)?

Parts 0 to 5 are free. No account needed to start.

Start

How it works.

Every step is written for someone who has never done this before. Three things happen on every page.

1Read one small step

Every step says exactly where to click and what you'll see. Nothing is skipped, not even turning on the computer.

2Copy the message to Claude

Each step gives you the exact words to send. Copy them, paste them to Claude, and watch it do the work. You never write code.

3Check it worked, tick it off

Every step ends with a simple check, plus what to do if something goes wrong. Tick it off and the next step is waiting.

Meet Binder, the app you build along the way.

A trading card collection tracker: every card you own, what each one is worth today, and a total that keeps up. The same steps build a shop app or a tool for your table at a show.

Coming soon

Connect your Claude.

Soon your Claude can read the guide too. It knows where you are, ticks steps off for you, and works by your rules.

  • Knows your next step

    Ask "what's next?" and Claude answers from the guide, with your phone and computer in mind.

  • Ticks steps off for you

    When Claude finishes a step with you, it marks it done in the guide.

  • Follows your rules

    The rules you pick here travel with every conversation.

Start free. Pay when you're ready.

Parts 0 to 5 are free, with no account. For the rest, pay monthly or once.

Free

$0

Parts 0 to 5, no account needed

  • Computer basics, meeting Claude, planning your app and your first screen (69 steps)
  • Your rules for Claude, ready to copy
  • Plain-words dictionary
  • Connect your Claude (coming soon)
Start free

Monthly

$19

a month

  • Every part of the guide while you subscribe: every screen, accounts, payments, testing and the app stores
  • Cancel anytime. If you stop, the paid parts lock, but your progress, rules and notes are kept for when you come back.
  • Kept up to date as Claude, Apple and Google change
Coming soon

You'll also pay for your own Claude plan and Apple's or Google's developer fees. The guide shows every cost before you need it.

Questions, answered.

Do I need to know how to code?

No. Claude writes the code. You describe what you want, copy the messages from the guide, and check the result on your own phone.

What does it cost besides the guide?

Your own Claude plan, and the fees Apple and Google charge to put an app in their stores. The guide shows each cost right before you need it, so nothing is a surprise.

Do I need a Mac?

Pick your computer at the start: Mac or Windows PC. The steps change to match it, and the guide is honest about what each one can and can't do.

iPhone or Android?

One app works on both. Pick iPhone, Android or both once, and every step shows only what you need.

Can I build a shop app or a card show tool instead?

Yes. Binder is only the worked example. The same steps build a want list, a price checker, your shop's app or a tool for your table at a show. Part 3 helps you plan yours.

What if Claude or Apple changes something?

Every step shows when it was last checked, and the What changed page lists updates. If your screen looks different, every step has a ready-made message to send Claude with a screenshot.