No specific info about version 3.1. Please visit the main page of Great Photo Pro on Mac Informer.
Optimizes the size of your images without affecting their quality.
Among the top 10 Mac apps in Top Grossing list of photography category in the US...
Edit, optimize, and convert images to fit your needs.
Apply artistic effects to your photographs to make them look like paintings.
Impresso Pro transforms digital photos to stunning artworks.