All tests run on an 8-year-old MacBook Air (Intel). Ships as universal binary. A universal binary runs natively on both Intel Macs and Apple Silicon. Not via Rosetta — actually natively, with the CPU running its own instruction set. With Tauri and Rust, building one is surprisingly straightforward. Add both targets rustup target add x86_64-apple-darwin rustup target add aarch64-apple-darwin That's the Intel target and the Apple Silicon target respectively. Build both and combine # Build for Intel cargo build --release --target x86_64-apple-darwin # Build for Apple Silicon cargo build --release --target aarch64-apple-darwin # Combine into a universal binary lipo -create \ target/x86_64-apple-darwin/release/myapp \ target/aarch64-apple-darwin/release/myapp \ -output target/universal/myapp lipo is Apple's tool for combining architecture slices into a single binary. It ships with Xcode Command Line Tools. Tauri's built-in support Tauri v2 handles this for you: cargo tauri build --target universal-apple-darwin One command. Tauri builds both architectures, runs lipo , packages the DMG. Done. The sidecar problem If your app bundles sidecar binaries (Swift CLIs, ADB, ffmpeg, etc.), each one also needs to be a universal binary. For binaries you compile yourself: # Build Swift CLI for both architectures swiftc -target x86_64-apple-macosx10.15 MyUtil.swift -o MyUtil-x86 swiftc -target arm64-apple-macosx11.0 MyUtil.swift -o MyUtil-arm64 lipo -create MyUtil-x86 MyUtil-arm64 -output MyUtil For third-party binaries (like ADB): check if the vendor provides a universal binary. If not, you'll need to bundle both and select the right one at runtime based on std::env::consts::ARCH . Verifying the output file target/universal/myapp # myapp: Mach-O universal binary with 2 architectures: # [x86_64:Mach-O 64-bit executable x86_64] # [arm64:Mach-O 64-bit executable arm64] lipo -info target/universal/myapp # Architectures in the fat file: x86_64 arm64 If you see both architectures, you're done. Binary size Universal binaries are roughly 2x the size of a single-architecture binary. For a typical Tauri app this means going from ~5MB to ~10MB. Acceptable for a DMG download. Hiyoko PDF Vault → https://hiyokoko.gumroad.com/l/HiyokoPDFVault X → @hiyoyok