Paprika for Mac currently requires OS X 10.8 Mountain Lion or later for technical reasons. There are no plans to introduce support for earlier versions of OS X.
Mac OS X 10.6 (Snow Leopard): No
Mac OS X 10.7 (Lion): No
Mac OS X 10.8 (Mountain Lion): Yes
Mac OS X 10.9 (Mavericks): Yes
Mac OS X 10.10 (Yosemite): Yes
Mac OS X 10.11 (El Capitan): Yes
macOS 10.12 (Sierra): Yes