Downloading IconKit 10.1.2 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. This software for Mac OS X is a product of Mojtaba Komeili. The application is included in Theming Tools. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
IconKit brings a great new experience of icon generator for developers and designers, just drag your 512x512 icon image to IconKit and you can resize your icon for iOS applications, unRetina your icon right on menu bar with Retina Reducer, preview and export round icons with glossy effect option, and more.
You may want to check out more software for Mac, such as Iconic, model2icon or Telling Folders, which might be similar to IconKit.