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Flutter is a freely available framework for cross platform app development. Flutter app development has its popularity among its users because it makes the overall mobile development process easy and takes significantly less time. This enables even non-programmers to build robust and responsive mobile applications.       

In this blog, we will guide you on how to develop app using Flutter even if you’re new to Flutter app development.  

What is Flutter? 

Flutter, launched by Google, is a free framework enabling developers to build beautiful and responsive mobile applications that run on both Android as well as iOS. After the release of Flutter 2, it has enhanced its functionality, enabling Flutter developers to build applications that operate not only on Android and iOS but websites.     

What is Flutter Development?

Flutter development provides a new way of building mobile applications based on a single codebase in order to rapidly create apps that run on multiple OS. The efficient methodology cuts down the development time significantly, making it the best solution for startups that aim to quickly enter the market. Flutter’s architecture supports business logic that takes care of user expectations and creates applications that are responsive and compatible with various devices and platforms. 

Why Choose Flutter Mobile App Development? 

Flutter has some amazing capabilities that make Flutter app development an ideal choice for businesses looking for applications that run on multiple platforms. Below, we have listed a few key factors that describe why choosing Flutter mobile app development is a great choice: 

Faster Development

You can build your app interface using flexible, nestable widgets offered by Flutter app development. This enables developers to build applications faster as compared to other programming languages.   

Live Reload

It shows the changes made in a few seconds without needing to recompile the code again. 

Built Natively

Underneath, it compiles the code in Java, enabling the same speed and efficiency as native applications.

Optimized for Low-End Systems

Flutter runs smoothly even on devices with limited system resources.

How to Develop App Using Flutter: Step-by-Step Guide

Here are a few steps on how to develop app using Flutter:   

Prerequisites

To follow along, make sure you have:

Basic understanding of programming concepts

Flutter must be installed on your system (download from flutter.dev)

Require VS Code, Android Studio, or another IDE

A connected device or emulator to run the app

Once Flutter is installed, start your terminal and execute:

flutter doctor

This command checks your setup and guides you to fix any missing dependencies.

Step 1: Create a New Flutter Project

Open your terminal or IDE and run:

flutter create my_first_app
cd my_first_app

This generates a new Flutter project with a built-in counter example. You can run it using:

flutter run

You’ll see a simple UI with a counter that increments when a button is pressed—your first Flutter app!

Step 2: Understanding the Project Structure

Flutter projects set up a neat, easy-to-understand folder structure

lib/
main.dart       → The application's main entry file
...
android/        → Contains platform-specific code and configuration for Android
ios/            → Contains platform-specific code and configuration for iOS
test/           → Includes unit and widget test files

You’ll mostly work inside the lib/ folder. 
Let’s break it down:

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'My 1st Application',
      home: MyHomePage(),
    );
  }
}

runApp() launches the app

MaterialApp provides UI components following Material Design

MyHomePage is the main screen widget

Step 3: Build a Simple To-Do App

Now, let’s replace the default counter app with a simple To-Do app. Open main.dart and replace the content with:

import 'package: flutter/material.dart';
void main() {
  runApp(MyApp());
}
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'The TODO APP',
theme: ThemeData(colorSchemeSeed: Colors.blue),
      home: TodoListPage(),
    );
  }
}
class TodoListPage extends StatefulWidget {
  @override
  _TodoListPageState createState() => _TodoListPageState();
}
class _TodoListPageState extends State {
  final List _todos = [];
  final TextEditingController _controller = TextEditingController();
  void _addTodo() {
    if (_controller.text.isNotEmpty) {
      setState(() {
        final newTask = _controller.text;
if (newTask.isNotEmpty) {
  _todos.add(newTask);
  _controller.clear();
}
      });
    }
  }
  void _removeTodo(int index) {
    setState(() {
      _todos.removeAt(index);
    });
  }
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('To-Do List')),
      body: Column(
        children: [
          Padding(
             child: Row(
              children: [
                Expanded(
                  final inputController = _controller;
final inputDecoration = InputDecoration(
  hintText: 'Enter text',
);
TextField(
  controller: inputController,
  decoration: inputDecoration,)
                      hintText: 'Add a new to-do item',
decoration: OutlineInputBorder(),
                    ),
                  ),
                ),
                SizedBox(width: 10),
                TxtBtn(
  onPressed: _addTodo,
  child: Text('Add Todo'),
),
                  child: Text('Add'),
                ),
              ],
            ),
          ),
          Expanded(
              itemCount: _todos.length, // Reflects the length of the to-do list
              itemBuilder: (ctx, i) {
                return Dismissible(

                  key: Key(_todos[i]),
                  background: DecoratedBox(
                decoration: BoxDecoration(color: Colors.red),
                  ),
                  onDismissed: (_) => _removeTodo(i),
                  child: ListTile(
                    final task = _todos[i];
                  ),
                );
              },
            ),
          ), 
        ],
      ),
    );
  }
}

This app allows users to:

Add new to-do items

View them in a scrollable list

Swipe to delete

It uses Flutter widgets like TextField, ListView, ElevatedButton, and Dismissible to create a smooth UI with minimal effort.

Step 4: Run Your App

Use the following command to run the app:

flutter run

Or press the “Run” button in your IDE. You’ll see your To-Do app running on your emulator or connected device. You’ve now built your first real, functional cross-platform app!

Step 5: What’s Next?

Now that you’ve created your first app, here are some ways to take it further:

1. Add Persistence

Use packages like shared_preferences or hive to save to-do items locally.

2. Add Themes

Customize typography, color schemes, and light/dark modes in Flutter with ThemeData

3. Explore Packages

Flutter has a rich ecosystem. Try out packages like:

Provider for state management

HTTP for API calls

Flutter Slidable for advanced list interactions

Explore pub.dev to find similar collections that fit your needs.

4. Build for Web or Desktop

Flutter now supports web and desktop. To build for the web, run:

flutter run -d chrome

Or for desktop (if enabled):

flutter run -d windows

Following the above steps will help you build you first cross platform app using Flutter Technology.