You can download Astrometry 1.6 for Mac from our application library for free. The file size of the latest setup package available is 7 MB. The application lies within Education Tools, more precisely Science. Our antivirus scan shows that this Mac download is malware free.
From the developer:
Astrometry for OS X is a native port of the astrometry.
You may want to check out more Mac applications, such as AstroDSLR, which might be similar to Astrometry.