Create Your First AI-Powered App (Web, Android & iOS) | Gemini 3, React, Firebase

Source code: https://www.yorch-dev.com/ Google AI Studio: https://aistudio.google.com/ Google Antigravity: https://antigravity.google/ Tutorial for creating a web and mobile (Android & iOS) exchange rate application using Google AI Studio and the Google Antigravity code editor. Both tools work with the Gemini 3 artificial intelligence model. This app is developed with React, TypeScript, Firebase, and Capacitor. 00:00:00 Intro 00:00:53 Demo 00:03:50 Google AI Studio and Google Antigravity 00:04:55 Prompt Structure 00:10:43 First Result, Quality Tests 00:11:59 Bug Fixes 00:14:17 Firebase Integration 00:19:47 Rate Manager 00:22:00 Local Testing 00:23:05 Mobile Builds (Android & iOS) 00:25:22 Android Testing 00:26:29 iOS Testing and Fixes