Copier

Desktop app to check if SD card files are backed up and transfer missing ones.

Install

brew install --cask yannickpulver/tap/copier

Universal binary (Apple Silicon and Intel), requires macOS 26 (Tahoe) or later.

Features

• Auto-detects SD cards (excludes SSDs)
• Checks against multiple sources in parallel:
  • Synology NAS via FileStation API (with 1Password support for credentials)
  • Local paths (NAS mounts, SSDs, external drives)
  • Fallback paths that only scan when NAS API is offline
• Shows missing files with size, camera model, and capture date
• Smart transfer suggestions based on where sibling files already live
• Transfer modes: new folder, existing folder, group by date
• Optional camera subfolder nesting
• Separates media files from non-media ("likely not needed")
• Click any file to reveal in Finder

Build

The app is a Tuist-generated Xcode project at macos/, with core logic in the macos/CopierCore Swift package.

cd macos && tuist generate --no-open

Then build with Xcode (scheme Copier), or from the command line:

xcodebuild -workspace macos/Copier.xcworkspace -scheme Copier build

Test

cd macos/CopierCore && swift test

Debug builds show dev-fixtures/test-sd as a card. Generate it with node scripts/make-test-sd.mjs.

Tech

Swift + SwiftUI, project managed with Tuist.