Read the Readme.txt file in the Crack folder.
According to this link, the Ultimate version has more features than the Pro version.
Download Auslogics Disk Defrag Ultimate 4.13.0.2 Multilingual
Download Auslogics Disk Defrag Ultimate 4.12.0.4 Multilingual Portable
Download Auslogics Disk Defrag Professional 12.0.1 Multilingual
Download Auslogics Disk Defrag Professional 12.0.1 Portable