Download Catapult

The free trial is fully functional for 30 days with complete interactive and batch processing modes.

You can use a license key for Catapult or Catapult Lite (which does not have batch processing functionality) without needing to download & install again.

Download Trial for Aperture 2.1 and Mac OS X 10.5.

Once downloaded, you’ll get a disk image with an installer package.
If the Installer does not open automatically, double-click the disk image to mount it, then double-click the “Install Catapult” package to run the Installer.

Once installed, the next time you launch Aperture,
Catapult will be available in Aperture’s Images > Edit With > Catapult menu when you select an image.

Buy Catapult

You want it, right? Go buy it!

Catapult
Buy Now from the Modeless Software store for $49 CAD.
Catapult Lite
Buy Now from the Modeless Software store for $19 CAD.
Catapult Lite upgrade to Catapult
Buy Now from the Modeless Software store for $35 CAD.

Updates

The latest version of Catapult is 1.0.5, which improves Snow Leopard compatibility. You can download it from the link above.