Builder School
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Mobile app · Day 0 of 100

Set up your phone

Accounts, the development build, and your first scan. Apple approval takes days, so this comes first.

25 minutes · 6 checks · Kit v0

Accounts

do this first

You need three accounts, and one of them takes days to approve. Start it now, then keep reading.

Apple Developer (iPhone only)Apple has to approve you before your own apps can run on your own phone. It usually takes two to three days.
ExpoFree. This is what builds the app and sends it to your phone.
An AI coding agentClaude Code, Cursor, or Windsurf. Any of the three works with every prompt in this course.

Ready when…

Your first build

one time only
Terminal
npx create-expo-app day-00-setup --template https://github.com/skorkoyah/mobile-kit/tree/v0
cd day-00-setup
npm install
npx eas build --profile development --platform ios

Ready when…

Next · Day 1Build TallyA tap counter, on your own phone, today. The whole screen is the button. It remembers your count, it asks before it throws anything away, and it celebrates when you hit your goal. You will not type a line of code.
Day 1 →