Use an external Magic Trackpad for gestures on any Mac

A Mac mini, Mac Studio, or Mac Pro has no trackpad of its own, and plenty of gesture apps only listen to the built-in one. So the obvious move — plug in a Magic Trackpad and get gestures on a desktop Mac — quietly doesn't work in a lot of tools. GestureCraft starts every connected trackpad at launch, so an external Magic Trackpad drives your gestures whether or not the Mac has a built-in pad. On a laptop, both pads run at once. (Full disclosure: I make GestureCraft. BetterTouchTool, Multitouch, and Swish support external trackpads too; GestureCraft is the simpler, native, one-time-$7.99 way to get just this.)

Step by step

1. Connect the Magic Trackpad and open GestureCraft

   Connect an external Magic Trackpad over USB-C or Bluetooth, then open GestureCraft. At startup it enumerates every attached multitouch device and starts all of them, so a desktop Mac with no built-in trackpad — a Mac mini, Mac Studio, or Mac Pro — is driven by the external pad. On a laptop, the built-in and the external work at the same time.

2. Click Add Rule

   Click Add Rule. Each rule reads like a sentence: When I do a gesture, run an action, in an app.

3. Record the gesture on the pad

   Under When I, do your gesture on the capture pad that says "Do your gesture here" — for example a three-finger swipe up or a two-finger tap. GestureCraft records the finger count and motion; when it recognizes the gesture the pad confirms it. It works the same whether you use the external Magic Trackpad or a built-in one, because both report normalized touch positions through the same path.

4. Pick what it runs

   In the run area, open the list of actions and choose what the gesture should do — launch an app, run an Apple Shortcut, snap a window, run a script, or send a keyboard shortcut or mouse click.

5. Choose where it applies

   Leave the rule set to All Apps, or switch to Specific App to limit the gesture to one app.

6. Save the rule and try it

   Save the rule, then do the gesture on the external trackpad — the action runs. If the pad goes to sleep or you toggle Bluetooth off and on, gestures resume when it reconnects without relaunching GestureCraft.

Ideas worth mapping

On a desktop Mac, the external pad becomes a whole row of spare buttons.

• Three-finger swipe up → Launch a specific app — a desktop-Mac "button" your external trackpad now provides.
• Two-finger tap → Run an Apple Shortcut by name — trigger automation from the Magic Trackpad on a Mac mini or Mac Studio.
• Four-finger swipe → Snap the front window — arrange windows from the external pad.
• Three-finger swipe down → Send a keyboard shortcut — reach a combo you'd otherwise have to type.
• Two-finger hold → Run a shell script — kick off a command from a gesture.

The same multi-finger gestures you'd use on a laptop's built-in pad work on the external one, and a rule is device-agnostic — there's no per-device setup to fuss with. One finger is left alone so it still moves the cursor.

Why an external trackpad on a desktop Mac?

A desktop Mac usually means a keyboard and a mouse, and gestures never enter the picture. Adding a Magic Trackpad next to the keyboard gives you the same multi-finger shortcuts a laptop owner takes for granted — swipe to launch an app, tap to run a Shortcut, snap windows — without giving up the mouse. GestureCraft is event-driven, so it sits at near-zero idle CPU: recovery after a wireless disconnect happens on the next app switch or wake rather than the instant of disconnect, which keeps the app from running a background loop while the pad is idle. In practice the lag is imperceptible.

Setting up gestures for the first time? See the best Mac trackpad gesture app guide, the full roundup of Mac gesture and input apps, or the specific guides for how to launch an app with a trackpad gesture and how to run an Apple Shortcut from a gesture.