No specific info about version 5.5. Please visit the main page of HDR projects 2 on Mac Informer.
Hydra Pro helps you create HDR images on your Mac.
HDR Darkroom 3 is a handy photo editor that helps you beautify your pictures.
HDR projects 4 professional is a professional image editor for Mac.
Automatically create amazing HDR photos out of your pictures.
Provides tools for transforming your photographs into brilliant works of art.