Kotlin Multiplatform App Development

Because you don’t have the luxury of building the same app twice.

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With KMP, your team writes shared business logic once and reuses it across iOS, Android, and the web, while keeping the flexibility for platform-specific editing where needed.

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That means faster delivery, lower costs, and cleaner code that your developers like working with.

KMP makes sense when:

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• You need to deliver iOS and Android apps in parallel, on time
• Your team is already stretched, and you need extra hands that can cover both platforms at once
• You want a maintainable codebase that’s easy to extend or hand over once the project is live

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Native development is worth considering if:

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• The app requires highly platform-specific features (e.g., complex AR, camera systems, or heavy hardware integrations)
• You have the luxury of larger budgets, longer timelines, and separate dedicated teams for each platform

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For most product-driven projects with common features like authentication, payments, and dashboards, Kotlin Multiplatform speeds up delivery and reduces costs without sacrificing quality.

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Kotlin Multiplatform uses Kotlin as a programming language, which means that Android developers can easily apply their knowledge to develop cross-platform applications. On the other hand, Flutter has its own, not quite familiar language, Dart. Flutter is owned by Google, and KMP by JetBrains, but Google announced support for Kotlin Multiplatform due to its big potential and stability.

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Both frameworks have their pros and cons, but generally perform well and save you time and money. It can be that if you need an app quickly, it is better to use KMP because Android developers are already familiar with Kotlin, as it is their primary language even when developing native apps.

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Kotlin Multiplatform:

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• Focuses on sharing business logic across iOS and Android while keeping the UI fully native
• Ideal when you need predictable timelines, maintainable code, and minimal disruption to your existing team
• Lets your Android developers jump in immediately, reducing onboarding time
• Perfect for multi-client projects where you want consistent behavior across platforms without rewriting core features

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Compose Multiplatform:

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• Extends KMP by allowing shared UI components across platforms
• Useful if your priority is rapid UI prototyping or consistent design across devices
• Can reduce design implementation time but may require more team adaptation if your developers are used to native UI patterns

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The takeaway for agencies and CTOs:

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• KMP: Fast delivery of multiple apps with minimal supervision
• CMP: Shared logic and UI, ideal if your team can coordinate design and development efforts

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React Native lets developers build apps using JavaScript and React. While it can speed up development for web teams, it often causes performance issues, tricky native integrations, and higher maintenance costs.

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KMP lets your team share core app logic across iOS and Android while keeping the UI fully native. This makes it easier to meet deadlines, add platform-specific features, and maintain a clean codebase, perfect for agencies delivering multiple client apps at once.

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One client who migrated their app from React Native to KMP said:

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"I don’t know exactly what you changed, but the app feels faster, smoother, and much easier to manage."

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For CTOs and Heads of Delivery, that means less stress, fewer delays, and more reliable client deliveries.