I'm the developer of the Legal Heat application and I had been waiting for an app like this to come out.
The app is better than I'd anticipated, especially for the first release. It allows you to move a circle over a certain geographic area and click update to find all the gun stores and their contact info. A simple, yet very intuitive design. Its user interface is simple and easy to use and it loads very quickly.
Congrats on the new app and best of luck!