iOS

iOS apps suffer from multiple performance issues: retarded network requests, excessive CPU usage, unoptimized UI calibration, and memory leaks. These issues can break apps and be detrimental to business outcomes.

iOS 18 and macOS 15.4 introduced restrictions on dynamic code generation that conflict with Flutter's JIT compiler requirements. This prevents hot-reload functionality and requires workarounds like reverting to beta versions or conducting debug work on simulators instead of real devices.

Rust doesn't offer out-of-the-box, first-class support for iOS and Android app development, limiting adoption for mobile-focused teams and forcing reliance on workarounds or alternative languages.

When Google or Apple release new OS updates with fresh features and APIs, Flutter typically takes time to integrate them. Flutter developers experience delayed access to new UI elements, platform APIs, and system-wide features compared to native developers.

Flutter experiences occasional compatibility issues on Apple devices despite Google's efforts for parity. Push notifications, background task execution, and in-app purchases require additional native code or third-party packages to function properly. Apple's strict App Store guidelines and frequent iOS updates further complicate development.

Different platform design expectations (e.g., iOS bounce effect vs. Android glow effect) make it difficult to create a consistent Flutter UI across all three platforms, requiring custom conditional rendering logic.