Convert Your Existing App To Flutter

Since Flutter is reigning in the app development trend, our clients are in a constant dilemma that they might need to develop another app using Flutter. They fear that their existing Android or iOS developed app will be of no use. Well, we would like to clarify to them that you do not have to develop another Flutter app. You can easily switch to Flutter without making major amendments. Surprised? I bet this blog will make you happier. In this blog, we have described our own experience of converting a native application to Flutter.

Flutter is Google’s brainchild and an open-source, cross-platform framework. It is highly flexible and allows developers to build a scalable, robust & fully functional cross-platform app. In this blog, we will be taking Kody’s developed milk delivery application written in Android.

This application aims at satisfying the daily dairy needs of the customers. We formed a team of developers who worked rigorously in delivering a Flutter version of this application. We didn’t do the transfer haphazardly; we deliberated the cases and then took the decision to convert to Flutter.

Let me tell you the cases when you should be up for this transformation.

1. When you have an already existing application in either Android or iOS and it is due for an update.

2. Your existing application is facing technical issues, and you anyhow have to work on releasing an update.

3. When you wish to go with the trend and wish to release a fully-functional application.

In the case of our milk-subscription app, we first developed a native web app as a Proof of Concept. Later, with the success of this app, we planned a native android app. And gradually, the client demanded to convert to Flutter.

We wished that our Flutter app looks unique and delivers a user experience to remember. It is quite obvious that the massive code base and variety of technology stacks might tempt you to make a swift move to Flutter.

Why we chose Flutter is because of the following reasons:

- Its ease of development;

- The speed and performance of the Flutter-developed app;

- Two apps with a single code;

- The application needs to be tested only once.

- It is a modern framework providing all the required features & functionality for swift mobile app development.

- The Hot Reload feature allows us to view the changes made in the source code instantly.

You might have your own set of problems that you wish to solve using Flutter. Discuss with your client and team how they wish to proceed with the Flutter solution.

Moving ahead with the topic,

How to transfer your existing app into Flutter?

To begin with, you need to integrate Flutter as a library or module. That module is responsible to reflect the application’s UI. You can create a module using Flutter create-t module command. This will initiate a new project creation yet with a bit different structure.

By creating a module in this way, you can separate the main code from the Flutter code. This module acts as an external dependency.

The further course of action that we followed is the same as that described in the official Flutter documentation.

Here is the series of screenshots of how our application looked when natively developed and how it looks with Flutter. If you do not wish to do it yourself, you can also hire our Flutter developers to initiate your transfer.

Native Android Application.:

How To Convert Existing App To Flutter
How To Convert Existing App To Flutter
How To Convert Existing App To Flutter

Flutter Application:

How To Convert Existing App To Flutter
How To Convert Existing App To Flutter
How To Convert Existing App To Flutter
How To Convert Existing App To Flutter


As you can see above, the application developed using Flutter looks more crisp and accurate than that developed using the Android programming language. It was quite speedy for us to make this quick move to Flutter. The Hot reload feature and Ahead of Time compilation feature made it easy for us to transfer our client’s app to Flutter.

If you need any further knowledge about Flutter app development, you can always connect with us. We are one of the early adopters of Flutter, and that makes us nimble in this industry. In our opinion, Flutter is the future, and it is the best time to start developing an app using Flutter.

blog author - kodytechnolab

Sagar Bagasariya

Principal Mobile App Developer