Downloading Dynamic Light 1.1 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.
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. The actual developer of this software for Mac is Mediachance. The application lies within Design & Photo Tools, more precisely Viewers & Editors.
From the developer:
Dynamic Light gives you the best and most vibrant HDR-like look on any platform. And this is all accomplished from just a single image using only a single dial. Rotate the dial to the right and you get the very same HDR look you had admired on many photographic sites.
You may want to check out more Mac applications, such as Magic HDR - High Dynamic Range Effects Tool -, Light Blue or Lighten PDF to Word Converter for Mac, which might be similar to Dynamic Light.