We Switched from React Native 0.70 to Swift 6.0 and Cut iOS App Store Rejection Rates by 60% in 2026 By 2026, our team had spent three years maintaining a cross-platform e-commerce app built on React Native 0.70. While the framework served us well for early MVP development, we hit a wall with iOS App Store review rejections: our average release required 15 back-and-forth iterations with Apple’s review team, delaying feature launches by up to 3 weeks per quarter. Why We Left React Native 0.70 Our rejection rate wasn’t tied to content violations, but technical edge cases that React Native’s abstraction layer struggled to address. The most common rejection reasons included: Guideline 2.1 (Performance): React Native’s bridge overhead caused intermittent frame drops on low-end iOS devices, triggering performance rejections even after optimization attempts.…