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How I Built and Shipped an AI Food Label Scanner to the App Store Using React Native & FastAPI

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Building a mobile app powered by multimodal AI sounds straightforward on paper—until you have to deal with noisy camera inputs, low-latency API responses, and strict App Store review guidelines. Recently, I built and published SafeBite AI to the iOS App Store. The goal of the app is simple yet critical: allow users with dietary restrictions or allergies to scan food ingredient labels and instantly know if it's safe for them to consume. In this article, I want to walk through the system architecture, the technical bottlenecks I faced, and how I optimized the mobile-to-cloud AI pipeline. The pip

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