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Requires macOS 15.0+

ExtBridge Interface ExtBridge Migration

Why ExtBridge?

Save on Storage Costs

Mac internal storage is expensive. Base models with 256GB or 512GB fill up quickly with heavy apps like Xcode, Logic Pro, or Final Cut.

The Smart Expansion

Instead of paying for a pricey Mac upgrade, simply buy an affordable external SSD.

Seamless Integration

Use ExtBridge to move these heavy apps to your external drive. We use system-level symbolic links so your apps work exactly as if they were still on your Mac. Plug in your drive to run them; unplug to take them to go.

For Developers

  • Move Xcode, Android Studio, Unity
  • Offload Docker Images & Containers
  • Store local LLM Models (Llama/Stable Diffusion)
  • Cache folders for Cursor/Antigravity

For Creatives

  • Move Final Cut Pro, Logic Pro, DaVinci Resolve
  • Manage massive 4K video assets
  • Store Blender/Unreal Engine assets
  • Offload VST Plugins & Sound Libraries

For Everyone

  • Offload iPhone/iPad Backups (MobileSync)
  • Run Parallels Desktop VMs externally
  • Archive large photo libraries
  • Store 4K Movies & TV Shows

Data Safety: Our Core Design Principles

We prioritize data integrity above all else. ExtBridge employs enterprise-grade safeguards to ensure your data is never at risk.

System-Level Cloning

Uses native ditto to preserve 100% of metadata, permissions, and attributes.

Verification-First

Strict audit of file count & size. Migration aborts instantly if any byte is missing.

Atomic Operations

Files are either fully at source or fully at destination. No broken intermediate states.

Automated Rollback

Built-in "undo". Millisecond-level rollback restores everything if any error occurs.

Do the Math

Upgrade Option Capacity Est. Cost Price / GB Flexibility
Apple Factory + 256 GB $ 200 $ 0.78 ❌ Locked
● ExtBridge + SSD
+ 2 TB (2,048 GB) $ 140 $ 0.07 ✅ Unlimited

Simple Pricing

One-time purchase. Lifetime access.

Lifetime License

SAVE 35%
$12.99
$5.00 / device
Download Trial

* Please purchase inside the app for instant activation.

  • ✅ Instant Auto-Activation
  • ✅ Unlimited Migrations
  • ✅ App & Folder Support
  • ✅ Free Updates
  • ✅ Priority Support

Frequently Asked Questions

Is it really safe to move applications?
Yes. We use standard macOS symbolic links (symlinks). The system treats the linked files exactly as if they were in their original location. We also perform integrity checks before deleting any source files.
What happens if I unplug the drive?
The migrated apps will appear as "?" or become inaccessible until you reconnect the drive. Once reconnected, they work immediately.

Important: If your drive disconnects unexpectedly (e.g., loose cable, power issue), your Mac may become unresponsive. This is a macOS limitation—when the system tries to access a missing drive, it can freeze. The most reliable solution is to restart your Mac. Your data is safe; restarting will clear the stuck processes and restore normal operation.

Tip: Use high-quality cables and ensure a stable connection to avoid accidental disconnections.
Does this work with apps from the App Store?
Yes, ExtBridge works with both App Store apps (like Xcode, Final Cut Pro) and direct downloads (like Docker, Unity).
Can I migrate apps back to my Mac?
Absolutely. You can move apps back to your internal drive at any time with a single click (unlimited migrations).
Which apps should NOT be migrated?
We strongly advise against migrating "Remote Desktop" software (e.g., TeamViewer, Sunlogin, ToDesk).
These apps often contain background daemons and drivers. Migrating them to an external drive may cause path resolution issues or continuous I/O, leading to memory leaks or system lags.