The Ginger application is available for Mac Os only as an extension for a browser. To remove the software, you need to remove the add-on or the extension from your browser. If you use Google Chrome, for example, to remove it, you just need to go to Tools -> Extensions, find the Ginger software and remove it. If you are using another browser, you can use Google in order to find a tutorial regarding the add-on and how to remove them.
