PosterGenius® is compatible with Mac OS X 10.9 "Mavericks".

Please note that if you are working on a brand new Mac or a Mac with a newly installed version of Mac OS X 10.9 "Mavericks", when first starting PosterGenius® after installation, you will be asked to install a Java runtime. This software update by Apple takes place automatically, so feel welcome to proceed as prompted.

You can download the Free trial version of PosterGenius® for Mac OS X here.