When developing a smartphone app, it used to be necessary to develop it separately for iPhone and Android.
But now, there are more and more ways to develop for both iPhone and Android with one mechanism. One such option is Flutter, which is being developed by Google.
Flutter is a cross-platform development framework that supports not only smartphone apps, but also web and desktop apps. It can be deployed in multiple environments based on a single code, which is easy to reduce development costs and operational burdens.
Flutter continues to evolve
Flutter is not a temporary fad and is still being updated on an ongoing basis.
Flutter 3.44.0 was released in May 2026, and amendments such as 3.44.1 and 3.44.2 have been released since then. According to Flutter's official release information, the 3.44 series has been updated, and we can see that the stability and development environment continue to improve.
Making a smartphone app is not the end. Continuous maintenance is required as OS updates, device changes, and store rules change.
Therefore, it is very important whether the technology used for development will continue to be updated in the future.
What to look for in Flutter 3.44
Flutter 3.44 includes not only major changes in appearance, but also many improvements related to actual development and operation.
For example, minor quality improvements include accessibility improvements for iOS, tooltip support for Windows, and crash fixes around text input.
It also includes support for Predictive Back for Android. This is an important part of the user experience, as it helps to make the Android "back" operation look more natural.
In app development, parts that are "harder to fall off", "easier to operate" and "meet the specifications of the OS" than flashy features lead to long-term quality.
ideal for both iPhone and Android apps
A major benefit of Flutter is its ease of use on both iPhones and Android.
Typically, iPhone apps are developed in Swift, and Android apps are often developed in Kotlin or Java, each requiring separate knowledge and implementation.
Flutter, on the other hand, allows you to develop iPhone and Android versions based on common code. Of course, not everything will be exactly the same, but it will be easier to commonize screen configurations and basic functions.
For this reason, we recommend the following apps:
- Membership app
- Booking app
- Business Management Apps
- Business applications such as delivery, inventory, and attendance
- A smartphone app that integrates with the web system
- Apps that use push notifications
Especially for smartphone apps that integrate with existing web systems and management screens, using Flutter makes it easier to organize your development scope.
Integration with web systems is also important
The smartphone app is not just a stand-alone app.
For example, if it's a booking app, you'll need an admin screen. If you are a member app, you will need a mechanism such as login, membership information, payment, notification, etc. If it is a business application, you may need a web system to review and edit the data on the administrator side.
In other words, in smartphone app development, not only the app itself, but also the system design on the back side is important.
Flutter is a strong technology for on-screen development, but in order to operate as a real service, you need to think about APIs, management screens, databases, security, and notification functions.
Dart is also updated
Flutter uses a programming language called Dart.
Dart 3.12 was also released in May 2026, and the development environment is being improved along with Flutter. Dart is also officially announcing the release of Dart 3.12.
Not only the Flutter itself, but also the language side is continuously updated, so we can expect future improvements in terms of development efficiency and maintainability.
Things to keep in mind when choosing Flutter
Flutter is a useful technology, but not always the best for every app.
For example, apps that use device-specific features in depth, or that want to fine-tune their appearance and behavior on a per-OS basis, may be more suited to native development.
In addition, it is necessary to check the status of the plug-in to be used, the store application, the notification function, the billing function, the external service linkage, etc. in advance.
Whether you want to use Flutter or not, it is important to decide according to the content, budget, delivery date, and maintenance system of the app you want to create.
Summary
Flutter is one of the best ways to efficiently develop smartphone apps for both iPhone and Android.
As of 2026, Flutter and Dart continue to be updated, and the development environment and stability are improving.
If you want to develop a new smartphone app or create an app that works with your existing web system, Flutter is a technology worth considering.
However, in app development, it is important to design not only the screen, but also the admin screen, APIs, data management, notifications, and security.
At Makoto Tejima, we propose customized development, such as web system development, smartphone app development, and adding AI-enabled features. If you are considering developing a smartphone app, please don't hesitate to contact us.
