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KMP helps teams share business logic across Android and iOS while keeping a native UI on each platform.
Kotlin Multiplatform changes the discussion around cross-platform delivery. Instead of replacing native UI, it focuses on sharing the business layer: models, repositories, use cases, networking and caching.
That makes it especially relevant when product complexity is high and the native experience still matters a lot.
That is the first thing to make clear. KMP does not try to render the whole application. Android can keep Jetpack Compose, iOS can keep SwiftUI, and the shared module handles the logic both apps depend on.
This means teams reduce duplication where it hurts the most while keeping platform-specific UI decisions intact.
The value of KMP grows with business complexity. If the product includes advanced rules, synchronization strategies, offline logic, scheduling, or heavy data processing, duplicating that logic in two native apps becomes expensive and risky.
With KMP, one fix in the shared logic benefits both platforms immediately. The long-term maintenance win can be substantial.
I do not position KMP as a universal replacement for Flutter. I choose it when the client wants strong native ownership, platform-specific UI polish, and a shared business layer dense enough to justify the setup.
For startups starting from zero with one team, Flutter is often the simpler and faster answer. For more mature mobile organizations, KMP can be the better long game.
Conclusion
KMP is a strategic tool. It makes the most sense when native excellence matters and the shared business logic is too important to duplicate. In those cases, it can be one of the cleanest mobile architectures available today.
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