The DVD versions must be installed from disk and cannot be installed by simply copying the .app file/package like the App Store versions can. Thus to be future-proof it's much better to archive the App Store versions. The process takes two Macs (or a Mac with a second external system drive), one running Mavericks and the other running Mountain Lion (or earlier, ML preferred). 1. Install the new iWork apps on the Mavericks system as described by others. Don't worry as the old good versions are still there! When you do this these apps are automatically added as purchases in the App Store. 1a. This process also works for DVD Aperture, however the new Aperture isn't de-featured and you don't really need to archive the old one. The process doesn't work for iLife apps 2. Go to the Mountain Lion system (or boot to Mountain Lion). Go to the App Store. The iLife apps will appear as purchases. Download them -- a popup window will tell you you can't install the latest version, but will offer to install the most recent version that will run on the system. 3. Archive the apps it downloads. You can use these to install (by copying to /Applications) the apps later if you need them! This doesn't work with the iLife Apps, as far as I can tell.