Aperture is no longer sold from the App Store, because Apple stopped the development. Aperture 3.6 is required for MacOS 10.10.3 or newer versions of macOS X. It is not possible to upgrade to this version on an older system.
The latest version of Aperture is 3.6 on Mac Informer. It is a perfect match for Viewers & Editors in the Design & Photo category. The app is developed by Apple Inc. And its user rating is 4.3 out of 5. Apple has released the download for Aperture 1.5. Version 1.5 is a free upgrade for existing Aperture owners and can be downloaded. Aperture is a good software but someday you might need something more functional and powerful in editing sense. For such occasion, we made a list of Aperture alternatives. Apple Photos has almost the same set of tools as the Aperture.
You can try to upgrade to Aperture 3.6, if you are running MacOS 10.10.3 or newer by reinstalling Aperture. This will work, if Aperture is showing in your purchase history at the AppStore, see: https://discussions.apple.com/docs/DOC-8402
Which system are you running? Even Aperture 3.6 does not support the new RAW Support that has been released after the Digital Camera RAW Compatibility Update 6.17, that came out on El Capitan. But your Camera is already supported by Digital Camera RAW Compatibility Update 6.01, that has been released with Yosemite, Digital camera RAW formats supported by OS X Yosemite - Apple Support
So upgrading to El Capitan or Yosemite should give you the RAW support you need. But you can only update Aperture to 3.6, if you are running a system that is compatible with Aperture 3,6.
Apple Aperture Download
Apple Aperture 3.6 Download
Jun 30, 2018 2:01 AM