RetroLablite 1.0.2 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The program is categorized as Design & Photo Tools. The actual developer of this software for Mac is Phyx Incorporated.
From the developer:
RetroLab is a photo processing application for Mac users that allows you to perform color and tone correction on your photos. The program features: exposure and tone controls, including realistic Vignette, white point, color temperature, and the ability to create color ‘Gels', rendering at full 32 bits-per-color for maximum image quality, and more.
You may want to check out more software for Mac, such as QuickShow OSX, Stone Studio or Dock Icon Viewer, which might be similar to RetroLablite.