Cross-Platform Mobile Development: What You Actually Give Up (and What You Don't)

"Cross-platform is slower and feels less native" was a fair criticism five years ago. Kotlin Multiplatform and Jetpack Compose Multiplatform share business logic across iOS and Android while still rendering genuinely native UI on each platform — the visual and performance gap that used to justify fully separate codebases has mostly closed.

• Day-one access to brand-new, platform-exclusive APIs — cross-platform tooling catches up, but not always instantly on release day.
• Deep platform-specific integrations (certain hardware features, some OS-level customizations) still sometimes need a native escape hatch.
• Team hiring — finding engineers fluent in a shared-logic cross-platform approach is a narrower pool than hiring separate iOS and Android specialists.

Shared business logic means one bug fix instead of two, one test suite instead of two, one feature implementation instead of two parallel ones. That advantage doesn't show up much at launch — it compounds steadily over the life of the app, in every release after the first.

• Kotlin Multiplatform, Explained