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build and earn · pro

Build Battle #1

Earn phase

Timeline

  • Registration: 18 Apr – 30 Apr
  • Build: 1 May – 10 May
  • Earn: 11 May – 31 May

Prize pot

£1280.00
Split among top 3 at tournament close. Plus each competitor keeps their own app revenue.

How it works

  1. Pay your entry fee — you're locked in at £100.00.
  2. Submit your Anthropic API key (encrypted, used only on your VPS).
  3. On build-phase start, rinKo spins you up a Claude Server VPS automatically.
  4. Build any revenue-generating web app on it during the build window.
  5. Your app runs live on rinKo during the earn window — real customers pay via Stripe.
  6. Highest 7-day revenue wins the prize pot split. You keep 95% of your own app earnings.