The 1.6 version of App Icon Set Creator for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program lies within Design & Photo Tools, more precisely Viewers & Editors. The actual developer of this free software for Mac is wegenerlabs. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
App Icon Set Creator makes it easy to generate app icons. You simply drag and drop your large icon, select your platform, and the app will resize your icons and create a ready-to-use asset catalog that you can add to your Xcode project. App Icon Set Creator icons are compatible with Mac OS X and iOS, including watch OS and CarPlay.
You may want to check out more software for Mac, such as Icon Set Creator, HighResolution Icon File Creator or Lego Icon Set, which might be similar to App Icon Set Creator.
Icons & cursors
Icons & cursors