Flutter and Unity. A way to boost up your business. [Update]

Flutter and Unity. A way to boost up your business. [Update]

Why Flutter?

For those who do not know Flutter:

Flutter is Google’s open-source toolkit for building beautiful, natively compiled applications for mobile, web, desktop, and embedded devices from a single codebase.

Nowadays, Flutter is the first choice for Mobile App Development. 
Flutter is gaining such notoriety because you build an Android and iOS app in it simultaneously. Previously, it took two separate teams of people to do this. Most importantly, according to developers, Flutter’s performance and stability surpass other solutions.

Why might you require Unity as a part of your mobile application?

1. Custom Product Configurators 

3D Tools for interactive ways for consumers to view and even configure products with high-quality visualizations,

2. Augmented Reality

A modern tool that gives the customer an immersive digital experience, which is being used more and more in many areas of business, from games and education to professional tools,

3. Interactive interfaces

The ability to achieve any effect in complex control or planning panels,

4. Gamification

Any app could use a brand promotion or a strategy to increase user engagement based on game mechanics,

5. 2D/3D games

(f.e, Pokémon Go, Among Us).

So should you consider combining Unity with Flutter instead of creating the whole app in Unity?

First of all, according to Clutch, as of today, 263 firms are offering Unity Development, and 1350 firms are offering Flutter Development.

This clearly shows that the availability of Unity Developers is much lower. I don’t need to explain how this affects the pace of recruitment and the costs of these specialists. At this stage, you’re probably wondering who exactly you need for your project and how large and costly the team will be, right?

If you’re planning your app and you know that 2D/3D models, scenes using Unity’s physics engine, or games will only take up a given portion of it, whether it’s a 50/50 ratio of screens or more or less, it means you’re at a point where you might be considering how to divide the work among developers.

More importantly, you should also think about the maintenance process, because after the launch phase of the app, you will face a long post-launch period, where you often change and test parts of the app related to monetization, user flows, UX, and general business logic changes.

It turns out that in your project, many developer tasks are not related to game physics, meaning they don’t have to be implemented by Unity Developers. Therefore, considering the aforementioned business issues, it might be a rational choice for you to hire a Unity specialist for the Unity parts and a Flutter specialist for the rest of the application.

So, the answer is: Yes, you should! But how does it work?

Flutter directly communicates with native Android/iOS source code. You can display entire Unity screens or their fragments in your Flutter application at any time. This means that you can have most of your product designed as an application, but when it’s needed, you can launch your fully functional games, animation, or 3D Models.

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Scenario 1 – WEB3 Game

Imagine your app is a WEB3 Game, and…as a matter of fact Codigee is currently working on such a solution combining Flutter and Unity for HOPX.

Hopx by Codigee as an example of WEB3 application
Communication for Bluetooth device (Flutter)
2D/3D game made with Unity
2D/3D Games (Unity)

These app’s main features are:

  • connecting to crypto wallets (Flutter),
  • marketplace with NFT items with buy/sell functionality (Flutter),
  • communication for Bluetooth device (Flutter),
  • geolocalization for move2earn mechanism (Flutter),
  • 2D/3D games for the play2earn tool (Unity).

It means that four out of five of this app’s main features don’t have to be made in Unity as it would look like in a standard approach, as this app must implement 3D games.

How do we handle that? Most of the features are made with a single-codebase in Flutter, as the app is meant for Android and iOS systems. Only the screens with games are made in Unity. So mobile Flutter App developers can focus on business logic, Bluetooth connection, web3 development, and game developers can work only on games.

Scenario 2 – e-commerce shop 

An application lets the customer directly view the product in 3D on the phone.

Is it possible?

The current Unity solutions allow for the implementation of 3D models of accessories and their direct display on the phone. If we combine all this with AR technology, we get a full-size mobile store where the customer can check directly in his home whether a specific model suits him.

Such an application is created mainly from lists, simple views and handling the connection to the server. So again, most functionality can be created much faster using Flutter Mobile App Developers.

E-commerce shop made using Unity
Created by Nikita Lavrik

Scenario 3 – AR for your Users

Regardless of your application, it is very likely to have a user community. So whether your business is a Web3 game or an art gallery, it is very sensible for your community to thank you for implementing their unique, trendy features.

Example of using AR in a mobile application


It’s worth mentioning the additional cost associated with maintaining a Flutter project integrated with Unity, which involves a more complicated and extended build process, and generally adds a level of complexity to the project. For instance, if you’ve previously relied on less experienced developers, this could be an issue. A lack of experience in integrating Flutter with Unity, or a general lack of experience among the developers, could result in several weeks of unplanned delays for your team and problems that last for many months. To avoid this, it’s advisable to invest initially in structuring the project in a way that makes its future maintenance as hassle-free as possible. This pertains to the project’s structure, repository, and CI/CD.

In the later stages of the project, however, maintenance will primarily fall on the shoulders of the Flutter Developer, as most changes are introduced in the app’s Flutter portion. One can imagine a scenario where the entire logic from the Unity side has been implemented once and doesn’t require further maintenance, while the Flutter part continuously utilizes it without the need for a Unity Developer’s attention. This, in the long run, could prove to be cost-effective.


Every Unity project can be integrated into a Flutter application. What needs to happen is preparation on both the Unity side, where communication with Flutter is established, and on the Flutter side, where apart from communication, the inclusion of Unity into the project is also implemented. If you have an extensively developed application or game in Unity that has been in development for years, the process of gradual transformation could be lengthy and ultimately not cost-effective. However, if you’re considering a complete redesign of the application, perhaps this is the perfect time to change technology. Speaking of smaller applications, or those being built from scratch, it’s also a good time to consider both technologies.

Performance Flutter with Unity

Building Unity on Flutter is just as efficient as simply building a native view in Flutter. The programmer’s challenge is to skillfully manage the use of CPU and memory as you move through the application, so that Unity takes up as little resource as possible when it is unused in the application.

More about how Unity works with Flutter and what to be aware of can be found here.


Combining Flutter and Unity presents a compelling case, especially when the bulk of your app doesn’t hinge on Unity-specific features like advanced game physics. If you envision a game abundant with views, navigation, and game-styled interfaces but without intensive use of the 2D/3D game engine, then Flutter might be your best bet. This strategy lets your game developers zero in on the core game physics. Consequently, you can optimize the broader pool of Flutter developers for the mainstream application elements and lean on the specialized skills of Unity developers for the game-centric sections.

To break everything down:

Developers Availability: There are more Flutter developers available than Unity developers. This impacts hiring speed and can optimize costs for the entire app development.

Work Division: If only part of your app relies on Unity, think about how to split the tasks. Much of the development might not necessitate Unity.

Maintenance: Post-launch, many changes mainly concern parts of the app that might not require attention to advanced physics or 3D visualizations but more on user flow and business logic.

Integration: Flutter can display Unity screens or fragments, enabling a mix of regular app and gaming/3D elements.

Hidden Costs: Integrating Flutter and Unity can be intricate. Proper initial project structuring can avert future complications.

Existing Unity Apps: Transitioning to Flutter for long-developed Unity projects could be time-consuming and not necessarily cost-effective. But it’s an avenue to consider for redesigns or new projects.

Performance: Using Flutter in tandem with Unity is advantageous when your app doesn’t heavily lean on Unity’s specific features, allowing more focused development on game mechanics.

Flutter + Unity for your project

Let our experience be a resource for your team.

Or just write an email
Maciej Szulc
Maciej SzulcCo-CEO, co-founder, Flutter developer


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