Flutter Mini Class #13 — Build a Dynamic BMI Calculator App

Beyond Static Screens. Build Apps That Respond.

Most Flutter tutorials stop at layout.
This mini class shows you how to connect user input, calculation logic, and dynamic UI feedback into a real, responsive app.

You won’t just place widgets — you’ll wire logic that drives behavior. From hand-coded BMI health categories to a header that changes color based on results, this project teaches you how data flows through a Flutter app.

This is Project #13 of your 100 Flutter Apps Journey.
Small app. Real logic. Real progress.

🚀 What You’ll Build & Practice in This Mini Class

✔️ Dynamic UI Driven by Logic: Connect BMI calculations to visual feedback, including a header that changes color based on results.
✔️ Segmented Button Input Handling: Use segmented buttons for gender selection and wire them cleanly into your app’s state.
✔️ Reusable Input Widgets: Create reusable height and weight input components instead of repeating UI code.
✔️ Health Classification Logic: Hand-code BMI categories and map raw values to meaningful health ranges.
✔️ Clean Data Flow: Move data from input → calculation → result → UI without overcomplicating state management.

📦 What’s Included

✅ 9 Full HD Video Lessons (1080p): Clear, focused walkthroughs — built to be watched and implemented, not binged.
✅ 1+ Hour of Structured Content: A complete build in 1 hour 06 minutes, scoped to be finished without burnout.
✅ Complete Flutter Project Files: All exercise and final code included, so you can follow, compare, and extend.
✅ Lifetime Access: Download once. Revisit anytime as part of your Flutter reference library.

💡 Why This Mini Class Is Different

Most Flutter tutorials stop once the UI looks right.

This mini class focuses on why the app behaves the way it does.
You’ll write the calculation logic yourself, map values to health categories, and connect results to real UI changes.

No magic code.
No unnecessary packages.
Just clear progression from input → logic → state → visual feedback.

You don’t just finish the class —
you understand how the app works.

Let's Get Started! 🚀