At last it is here! Apple's app submission policy is very strict - which is a very good thing for end users - which means getting Wizkers:Radio approved took longer and more effort than expected, but you can now install it directly from the Mac app store. Search for "Wizkers Radio" there.
After a lot of though, we have taken the decision to make the app store version $8.99. As you know, Wizkers:Radio is an open source application, which means that you can also download it and compile it from source with the appropriate setup on your computer, at no cost. While proficiency on the command line is definitely required, http://wizkers.io/ contains all the instructions in the "Support" section for doing so if you feel inclined.
The good thing about using the App store though, besides supporting the project, is that it gives you automatic updates, the guarantee of an app that has been thoroughly reviewed by Apple and will work well on your machine, and generally more ease of use and peace of mind. I would love to get your thoughts on this approach, which is similar to what other great open source Ham radio projects like aprsdroid have been doing: open source, DIY build is free, pre-packaged version on app store is for sale.
This way, we feel we have reached a nice balance between openness of the code in the spirit of Ham radio, and a way to show your support and make your life easier.
Of course, if you like the app, please feel free to leave positive reviews!