Download of Image View Studio 13.6.4 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X is an intellectual property of Everyday 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. The software lies within Design & Photo Tools, more precisely Viewers & Editors.
From the developer:
Image View Studio is an ergonomic, fast and convenient image viewer. It is designed to help you browse and view images in a large number of formats. The tool comes with a lightweight and powerful interface designed to make image viewing and management comfortable and easy.
You may want to check out more software for Mac, such as Android Image Viewer, Image Viewer Pro or Bloom Image Viewer, which might be related to Image View Studio.