By 2026 there's no immature option left on this list. React Native finished its New Architecture transition, Flutter's rendering engine work has had years to settle, and Kotlin Multiplatform has both a stable logic-sharing story and a stable UI-sharing option in Compose Multiplatform.
That's a real change. A few years ago, picking one of these was partly a bet on which team would actually finish what it started. The remaining differences aren't about maturity anymore. They're about what each framework asks you to give up, and you can't wave that away with "it'll get better."
#React Native
The internals were rebuilt; the core trade didn't change shape. You write UI in JS/TypeScript against native components. In exchange you get the largest hiring pool of the three, direct code and skill reuse with a React web team, and an ecosystem — Expo, EAS, React Navigation — that's had a decade to fill in gaps.
The New Architecture work ran from 0.68 through 0.84 and killed the framework's biggest historical weakness: bridge-based communication overhead and the debugging pain that came with it. What it didn't kill is the two-runtime problem. You're still coordinating JS and native rather than one, and library quality still varies more than it does in a single-toolkit ecosystem.
Governance changed materially in 2025. React, React Native, and JSX moved to a Linux Foundation-hosted React Foundation rather than staying a Meta-only project. Factor that into any long-term risk assessment, in either direction.
#Flutter
Flutter's pitch hasn't moved. One Dart codebase, one rendering engine (Impeller, now the default on both iOS and Android), pixel-identical UI across platforms, because it's the same renderer drawing the same instructions rather than two toolkits trying to agree.
That consistency is Flutter's real advantage for design-heavy, animation-heavy apps. You're not fighting platform idiom drift the way you sometimes are with native-component approaches.
The costs are unchanged too. Dart is a smaller hiring pool than JS or Kotlin, and a Flutter app talking to platform-specific APIs still routes through platform channels rather than feeling native by default. Flutter also carried real community anxiety through 2024, after reports of internal team reductions at Google raised doubts about long-term investment. Sustained commit velocity and continued I/O presence since then argue against those doubts. The scar on trust is real anyway, and it shows up in enterprise adoption conversations even when the technical trajectory looks fine.
#Kotlin Multiplatform (with Compose Multiplatform)
KMP's proposition is different in kind, not just degree. Instead of one shared UI layer talking to native code, you get native performance and full native API access by default, with sharing as something you opt into deliberately via expect/actual. That makes it the natural fit for Android-first orgs that want to extend to iOS without rewriting business logic twice. Compose Multiplatform now gives those same teams a stable option to share UI too, if they want it, without forcing the choice.
The honest limitation is adoption shape. This is fundamentally an Android team's tool being offered to iOS engineers, and getting genuine buy-in from an iOS team that's productive and happy in Swift/SwiftUI is a people problem, not a technical one.
The third-party library ecosystem is also still thinner than React Native's for anything beyond networking, serialization, and local storage. You'll write more of your own multiplatform glue than you would starting an equivalent React Native project.
#How to choose
Start from your team's actual skills, not the framework's marketing.
A web-heavy team with strong React and TypeScript experience will be productive in React Native faster than in either alternative, and the Expo toolchain removes most of the historical native-setup pain. Android-first, already deep in Kotlin, wants to reach iOS without doubling business-logic maintenance? That's the clearest fit for KMP, and Compose Multiplatform is worth a pilot if that same team also wants to reduce iOS UI duplication. Not as a default. A team building a design-system-heavy, animation-rich product, especially one already comfortable owning a second language, gets real value from Flutter's rendering consistency that the other two don't offer in the same way.
None of these choices are permanent or exclusive. Plenty of real codebases mix KMP for shared logic with fully native UI on each platform, or run React Native for the main app shell while a performance-critical screen stays native. Treat this as a per-project decision made with today's team, not a company-wide platform bet you're locked into for five years.
The frameworks all got more mature. That mostly means the failure modes shifted from "the tooling isn't ready" to "we picked something our team didn't actually want to learn." Much more avoidable.