The 1.9 version of Sandkorn 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. This free Mac application was originally designed by Peter Borg Apps AB. The application is included in System Tools. 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:
Sandkorn is an easy-to-use utility that shows you which of your macOS apps are sandboxed. The application also shows you what entitlements those apps have. Many apps are restricted in a sandbox. By using Sandkorn, you can see what apps have no restrictions at all or are limited to accessing your contacts or some particular folder.
You may want to check out more Mac applications, such as Libra, DataLore or Curator, which might be related to Sandkorn.