Maperture 1.2.9 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program lies within Design & Photo Tools, more precisely Viewers & Editors. We recommend checking the downloaded files with any free antivirus. The actual developer of this free software for Mac is Ubermind.
From the developer:
Combining the power of Aperture and Google Maps (the mapping engine you know and love), Maperture is a powerful, new edit plug-in that makes geotagging your photos a snap.
Feature List Add or update global positioning system (GPS) data to your digital photos Scales from a few images to your entire library Elegant, responsive user-interface
You may want to check out more Mac applications, such as Cuadro or Resize Now, which might be related to Maperture.