Native development means two separate codebases — Swift for iOS, Kotlin for Android — each with full access to the platform. Cross-platform means one codebase shared across both, at some cost to native performance and API access. The gap between them has narrowed a lot, but it hasn't closed, and knowing when it matters is the whole decision.
Default to cross-platform. Modern frameworks handle the vast majority of business app requirements at native-equivalent quality, for roughly half the build and maintenance cost. Native earns its premium when performance, bleeding-edge platform features, or long-term flagship polish genuinely move the needle — not as a starting assumption.
For most business apps, no — cross-platform frameworks now deliver native-equivalent UX for standard app patterns. Native still earns its cost for performance-critical apps (gaming, AR, real-time media) or products that need immediate access to new platform features as Apple or Google ship them.
As a rough rule of thumb, native development runs close to double the cost of cross-platform, since you're building and maintaining two separate codebases with two sets of specialized engineers rather than one team working on one codebase.
It happens, but it's effectively a rewrite, not a migration — cross-platform and native codebases don't share code. It's more common for growing products to stay cross-platform and drop into native modules for the one or two features that genuinely need it, rather than rewriting the whole app.
Less than it used to. Mature frameworks cover camera, location, push notifications, biometrics, and most common APIs through plugins. The gap shows up mainly with brand-new OS features in their first release cycle, before the framework ecosystem catches up.
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