I launched 3 Flutter & Firebase apps in 30 days:. - RevenueCat for subscriptions.- iOS & Android app in Flutter.- Backend using Firebase.- Mixpanel for analytics.- Settings & legal pages.- Remote notifications.- App review prompt.- Responsive design.- Onboarding flow.-.

There are many ways to add a widget to children in Flutter. I mostly stick to the first two:. ✅ Unconditional.✅ Simple if. If the logic gets more complex, I move it outside the widget tree to keep things clean. My rule:.- Small widget? Add it inline. - Bigger logic? Handle it

Need to sign users in without email?. Firebase Auth supports anonymous sign in out of the box:. ✅ Users get a real user ID.✅ Firestore security rules work as expected.✅ You can save and load user-specific data.✅ Accounts can be linked later without losing data. It’s perfect

Stop styling Text widgets manually. Instead, define your styles once using ThemeData.textTheme, and use them everywhere. ✅ Consistent text style.✅ Cleaner widget code.✅ Easy to update. For each text style I define:. - size.- color.- height.- weight.- letter spacing. That way

What else?.

16. Not using auto-formatter.

15. Leaving commented-out code.

14. Using outdated Flutter version.

13. Write operations in build method.

12. Using functions to return a Widget.

11. Not having clean architecture laters.

10. Testing only on iOS, but not Android.

9. Going for easy solution vs best solution.

8. Widget classes with 500+ lines of code.

7. Using outdated or unmaintained plugins.

6. Not marking immutable variables as final.

5. Not testing edge cases and empty states.

4. Vague naming (CustomButton, MyAppBar).

3. Custom styling in Text Widgets vs TextTheme.

2. Not reviewing your own code before creating a PR.

1. Not using server-side logger (such as Crashlyitics).