How to Choose the Right Mobile App Technology: Flutter vs. KMP vs. React Native.

Choosing the right technology stack for your mobile app is one of the most important decisions you'll make. It affects how fast you can go to market, how easily you can maintain and scale, and how smooth the experience will be for your users.

At Appsoluty, we work with Flutter, Kotlin Multiplatform (KMP), and React Native — and in this post, we'll break down the strengths and weaknesses of each, and when to choose one over the others.

Flutter: The UI Champion

What it is:

Flutter is a UI toolkit developed by Google that uses the Dart programming language. It allows you to write a single codebase for both iOS and Android with a strong focus on smooth animations and pixel-perfect design.

Strengths:

• Fast development: Hot reload and rich prebuilt widgets speed up design and iteration.
• Beautiful UI: Great for custom interfaces, animations, and branded apps.
• Strong ecosystem: Google support, good documentation, and growing community.

Use Flutter if:

• You want stunning visuals and fluid UI/UX.
• You need to launch fast on both iOS and Android.
• Your team is comfortable with Dart or you want Google-backed tech.

Kotlin Multiplatform (KMP): The Code Sharing Pro

What it is:

KMP is a powerful solution from JetBrains that allows you to share business logic across platforms while still writing native UIs in SwiftUI and Jetpack Compose.

Strengths:

• True native experience: You get native UI and native performance.
• Smart code sharing: Share networking, database, and business logic, not the UI.
• Great for Android-first teams: Seamlessly extends Kotlin-based backends or Android apps.

Use KMP if:

• You want a native look and feel with shared core logic.
• You already use Kotlin in your backend or Android app.
• Performance and scalability are top priorities.

React Native: The JavaScript All-Rounder

What it is:

React Native, developed by Meta, lets you build apps using JavaScript and React. It’s widely adopted, open-source, and has been used by companies like Instagram, Shopify, and Discord.

Strengths:

• JavaScript-based: Easy adoption for teams familiar with web development.
• Large plugin ecosystem: Tons of libraries and community support.
• Fast prototyping: Great for MVPs and internal apps.

Use React Native if:

• You already have a web team experienced in React.
• You want fast delivery with access to many community packages.
• You’re building an MVP or a simple cross-platform app.

Which One Should You Choose?

Here’s a quick cheat sheet:

But keep in mind — there is no one-size-fits-all answer. That’s why at Appsoluty, we start each project with a technical discovery phase to choose the best technology based on your business goals, app complexity, target users, and timeline.

Final Thoughts

Each of these technologies can produce excellent apps — what matters is choosing the one that aligns best with your budget, timeline, and long-term vision.

Still not sure? Book a free consultation with us, and we’ll help you figure out what’s right for your product — and how to get it to market as efficiently as possible.