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Starting your first software project? Build a strong foundation with practical planning, clean coding practices, and effective collaboration. Discover the complete guide for junior developers.

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Planning your first custom software project? Success starts with the right strategy. From defining business goals and choosing the right technology stack to development, testing, and scaling, every step matters.

Our latest guide walks you through the complete process to help you avoid common mistakes and build software that delivers real business value.

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The truth is, creating a native application for each platform was considered the best practice in the past. This method seemed quite professional since it took into account all the peculiarities and differences of different devices. However, in 2026, this process becomes rather expensive, slows the development process significantly and causes many difficulties among developers. The world of cross-app development is rapidly developing, which is why businesses that do not apply cross-development become less competitive gradually.

What is cross-app development?

Cross-app development involves designing a program that would work flawlessly on all required platforms  iOS, Android, and web. All in all, you write only one piece of software code that performs the same way on all devices. Only the view part differs on each platform, and tools like Flutter, React Native and emerging Kotlin Multiplatform make this task quite challenging and rewarding at the same time.

This is similar to how you write the screenplay for your movie in such a way that it can be adapted to different audiences depending on the language or context. In this case, you only adjust the context – everything else remains the same.

The numbers don't lie

70%: Reduction in engineering efforts made by Google Pay using Flutter

98.3%: Reutilization of code made possible at eBay via Cross-App development

2×: Speed-up of the development cycle experienced by eBay after migration

6.9B: Users of smartphones expecting a seamless experience from apps worldwide

This is not little progress. This is a transformation. Companies reporting such results as reducing engineering efforts by half or increasing production rate by double mean that cross-platform development is no longer a trend, but rather a standard.

Changes of 2026 explained

Three key changes differentiate cross-app development landscape of today from that of two years ago.

AI-assisted coding has been integrated into daily developer life. Using tools such as GitHub Copilot to develop Flutter and React Native applications helps create boilerplate code faster and reduce the time spent doing routine tasks such as debugging. This leads to increased efficiency and improved product quality due to decreased amount of errors.

Kotlin Multiplatform (KMP) offers a way to develop a unified product. The approach allows sharing the business logic of your application (APIs, states, data models) while having a native look and feel in any environment. That way, you only have to make one application and not two at once.

All three frameworks mentioned (Flutter, SwiftUI, and Compose) use a declarative approach. It means that you describe what you want the user interface to look like and let the framework deal with it.

Choosing the right framework for you

Flutter provides unparalleled precision with UI rendering and performance due to direct compilation to native code without any need for JavaScript bridge. React Native still holds its position as a leading option when developing applications for JavaScript developers and offers the biggest possible ecosystem for this reason. For those who want native performance and native look, Kotlin Multiplatform would be a great choice. As for .NET MAUI, this framework is especially valuable for companies using Microsoft technologies and having many .NET developers.

It seems there is no ultimate solution that would be suitable for all situations. Your choice depends on many things: your experience, the type and size of your application, and scaling strategies. Nevertheless, choosing a particular framework and focusing on it is better than making a mess by trying several frameworks at once.

Conclusion