gRPC and Protocol Buffers for Mobile API Backends

--- title: "gRPC vs REST for Mobile: Benchmarks, Tradeoffs, and Reality" published: true description: "A hands-on walkthrough of gRPC vs REST for mobile backends — real serialization benchmarks, codegen pipeline comparison across Wire, grpc-kotlin, and SwiftProtobuf, and practical guidance for Android, iOS, and KMP teams." tags: kotlin, android, ios, mobile canonical_url: https://blog.mvpfactory.co/grpc-vs-rest-for-mobile-benchmarks-tradeoffs-and-reality --- ## What You Will Learn By the end of this walkthrough, you will understand exactly where gRPC with Protocol Buffers beats REST+JSON on mobile — and where it doesn't. We will cover real serialization benchmarks on mid-range devices, walk through the codegen pipeline options for Android, iOS, and KMP, and I will show you the interceptor pattern that replaces half your custom networking boilerplate. Here is the short version: gRPC delivers roughly 60% smaller payloads and 30-40% faster serialization than REST+JSON on mobile, but only