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.
for Aperture 2.1/3.0 and Mac OS X 10.5.
Once downloaded, you’ll get a disk image containing an installer application.
Run the installer application to install Catapult.
Once installed, the next time you launch Aperture, Catapult will be available in
Aperture 2.1’s Images > Edit With > Catapult menu,
or Aperture 3’s Photos > Edit with Plug-in > Catapult menu
when you select an image.
Also, please check the help documentation for notes regarding Aperture 3.
Buy Catapult
You want it, right? Go buy it!
- Catapult
-
from the 
store for $49 CAD.
- Catapult Lite
-
from the store for $19 CAD.
- Catapult Lite upgrade to Catapult
-
from the store for $35 CAD.
Updates
The latest version of Catapult is 1.0.6, which improves Aperture 3 compatibility. You can download it from the link above.