RapiDrop

Fast, private, peer-to-peer clipboard synchronization and local file sharing between macOS and Android.

RapiDrop connects your devices directly over local Wi-Fi using end-to-end encrypted TCP connections. Your data never leaves your local network: zero cloud servers, zero telemetry, zero accounts, and zero third-party relays.

Downloads

Download the latest pre-compiled binaries from GitHub Releases:

Platform	Download	Requirements
macOS	RapiDrop-macOS.dmg	macOS 14.0+ (Universal Apple Silicon & Intel)
Android	RapiDrop.apk	Android 10+ (API 29-35+, ARM64 & x86_64)

Looking for portable ZIP archives (.zip) or cryptographic checksums? Visit the Latest Release Page.

macOS

1. Open RapiDrop-macOS.dmg and drag RapiDrop into your /Applications folder.
2. Launch RapiDrop from /Applications. The icon will appear in your menu bar.

Note

macOS Gatekeeper: On first launch, macOS may report that the developer cannot be verified. Right-click RapiDrop.app in /Applications and choose Open, or run:

xattr -cr /Applications/RapiDrop.app

Android

1. Download and open RapiDrop.apk on your phone to install.
2. Open the app and allow notification permission so background sync stays active.
3. (Optional) Add the RapiDrop tile to your Quick Settings notification shade for instant one-tap sharing.

Key Highlights

• Instant Clipboard Sync: Copy text, links, or screenshots on one device and paste them on another in milliseconds.
• Large File Streaming: Stream multi-gigabyte files and folders at wire speed in bounded 1 MB chunks with streaming SHA-256 integrity verification.
• Interactive Radar Pairing: Tap a nearby peer on the radar screen. The receiver accepts with a matching 6-digit Short Authentication String (SAS) code.
• Pure Local-First Privacy: Operates strictly within your local subnet (_clipsync._tcp via mDNS). Zero cloud tracking, zero telemetry.
• End-to-End Encryption: Every packet is encrypted with AES-256-GCM using fresh ephemeral keys negotiated via X25519 key agreement with HKDF-SHA256 transcript hashing.
• Password Manager Protection: Automatically detects and ignores sensitive transient clips from 1Password, Bitwarden, KeePass, and Apple Keychain.

Supported Platforms

Platform	Native Architecture	System Integration
macOS	Swift 6 / Apple Network.framework	Menu Bar Accessory (LSUIElement) & NSPasteboard 400ms polling
Android	Kotlin 2.0 / Jetpack Compose	connectedDevice Foreground Service & MediaStore Scoped Storage

Documentation

For Users

• Getting Started: First-time setup and overview.
• Pairing Devices: How discovery and SAS verification work.
• Clipboard Synchronization: Cross-device copy and paste behavior.
• Sharing Files: Sending files and folders over Wi-Fi.
• Privacy & Security FAQ: Plain-language security answers.
• Troubleshooting: Common connection questions.

For Developers

• Architecture Overview: Component breakdown and data flows.
• Wire Protocol Specification: 28-byte framing, opcodes, and chunk format.
• Cryptographic Specification: X25519, HKDF-SHA256, and AES-256-GCM.
• Testing Guide: Test suites, parity vectors, and failure matrix.
• Platform Implementations: Native platform details.
• Operations & CI/CD: GitHub Actions workflows and release packaging.
• Contributing Guidelines: Standards and pull request guidelines.

Development & Test Commands

macOS

# Run unit tests
swift test --package-path macos

# Build release bundle (.app / .dmg / .zip)
./macos/package.sh --all

Android

cd android

# Run unit tests
./gradlew test

# Assemble release APK
./gradlew assembleRelease

License

RapiDrop is open-source software licensed under the MIT License. Built and maintained by Prabotics.