Google’s transition of Android UI development from the XML layout system to Jetpack Compose has been, by the standards of platform UI framework migrations, unusually smooth. Compose became stable in August 2021. By 2024, it was the recommended approach for new Android development. In 2026, the question for Android teams is no longer whether to adopt Compose but how to manage the migration of existing View-based codebases.

The comparison with SwiftUI is instructive. Both frameworks launched within two years of each other, both represent declarative replacements for older imperative UI systems, and both have faced criticism for gaps between their initial capabilities and the full feature set of what they replaced. Compose has navigated this transition with fewer of the minimum-API-level constraints that limit SwiftUI’s adoption curve, because Android’s broader device compatibility requirements have historically pushed Google toward more conservative backward compatibility policies.

SwiftUI launched in 2019 with a demonstration that made experienced iOS developers simultaneously excited and nervous. Excited because the declarative paradigm promised to eliminate the impedance mismatch between interface builder storyboards and code. Nervous because Apple’s track record with new frameworks included several that were replaced, deprecated, or quietly ignored within a few development cycles.

Five years later, SwiftUI is neither the complete replacement for UIKit that Apple’s marketing implied nor the abandoned experiment that skeptics predicted. It is a mature but still-evolving framework that handles a large majority of common iOS UI requirements elegantly, struggles with a specific set of advanced requirements, and has permanently changed how iOS UI code is written even when developers reach for UIKit to solve problems SwiftUI cannot.

Apple’s App Store commission structure has been the subject of regulatory scrutiny, antitrust litigation, developer revolt, and congressional testimony for five years. The outcome of all this attention is a commission structure that has changed at the margins while remaining fundamentally intact at its core. The 30 percent standard rate — reduced to 15 percent for developers earning under a million dollars annually and for certain subscription renewals — continues to apply to the overwhelming majority of App Store revenue.

Google’s decision to build Flutter on top of Dart — a language that had minimal developer mindshare and an uncertain future when Flutter launched — was a risk that the broader developer community viewed with skepticism. Dart was not JavaScript. It was not Kotlin. It was not a language that developers had strong feelings about because most developers had never used it. Building a cross-platform UI framework on an obscure language was, on its face, an unusual strategic choice.

React Native was announced by Facebook in 2015 with a promise that rewrote the calculus of mobile development: learn once, write anywhere. The promise was qualified from the start — React Native was never write once, run anywhere in the way that early web-based mobile frameworks had claimed to be — but it was credible enough to reshape how a generation of mobile teams made technology decisions.

Eleven years later, React Native is used in production by Microsoft, Shopify, Coinbase, and thousands of smaller organizations. It has survived the emergence of Flutter, the maturation of Kotlin Multiplatform, and a period of internal uncertainty at Meta when the framework’s future was genuinely in question. Its survival reflects something real about the problem it solves and the ecosystem it has built.

The question of whether to build natively for iOS and Android or to abstract across both platforms with a cross-platform framework has occupied mobile development teams for more than a decade. The answer has not settled. What has settled is the character of native development itself — and in 2026, Swift and Kotlin have each reached a maturity that makes the native argument significantly stronger than it was five years ago.