90‑Day Growth Roadmap for Sustainable Mobile Development Month 1 – Foundations and Your First App Start by installing the official IDE (Inte

90‑Day Growth Roadmap for Sustainable Mobile Development Month 1 – Foundations and Your First App Start by installing the official IDE (Integrated Development Environment) for your target platform – Android Studio for Kotlin/Java or Xcode for Swift. Follow the setup wizard, create a virtual device, and run the default "Hello World" project to confirm everything works. Spend the first two weeks learning core concepts: the app lifecycle, UI layout files, and basic event handling. Use short 30‑minute coding bursts each day; a simple habit loop of "plan‑code‑review" helps build momentum. By the third week, design a tiny native app that...