There was a download of AltaLux/App 2.5.1.61 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The following versions: 2.5 and 0.8 are the most frequently downloaded ones by the program users.
We recommend checking the downloaded files with any free antivirus. The software is sometimes referred to as "AltaLuxApp". The software lies within Photo & Graphics Tools, more precisely Viewers & Editors. The AltaLux/App installer is commonly called AltaLuxDemo.exe. This free program was originally produced by Stefano Tommesani.
From the developer:
AltaLux is an image processing technology that can significantly enhance the quality of images and videos with poor lighting conditions
You may want to check out more software, such as Montagne, Wire Pilot Plugin or ImageVisu, which might be similar to AltaLux/App.