Cairo M for Mobile

A React Native app using Expo using Cairo M to generate zero-knowledge proofs on mobile.

Development

Requirements

• Rust

• Node.js 22 & npm

  • It is recommended to use a version manager such as nvm.

• Android Studio

• XCode (if targetting iOS)

• CocoaPods

Setup

0. Setup Rust

# Android
rustup target add aarch64-linux-android
cargo install cargo-ndk

# iOS
rustup target add aarch64-apple-ios
rustup target add aarch64-apple-ios-sim

1. Clone the repository

git clone https://github.com/kkrt-labs/cairo-mobile.git
cd cairo-mobile

2. Install dependencies

npm install

3. Prebuild the native Android & iOS directories

npx expo prebuild --clean

4. Generate Native Bindings: This step compiles the Rust code in cairo-m/ and prepares the native modules (cairo-m-bindings). ⚠️ Running npm run generate-bindings will generate ios bindings simulator, not for device. For ios devices, run node scripts/setup_rust_bindings.mjs --ios-device

   npm run generate-bindings
   # or specifically:
   # node scripts/setup_rust_bindings.mjs --all

   You'll need to re-run this command whenever you make changes to the Rust code in cairo-m/ folder.

5. Run the app

• Android: Run on Android device if connected, fallbacks to Android Simulator

  npx expo run:android

• iOS

  npx expo run:ios # Run on iOS Simulator
  npx expo run:ios --device # Run on iOS device