Holy toddlers in comments, this program doesn't really work anymore. It has a 64 bit version , but it doesn't work on windows 10 or above (to my knowledge). To change your cursor on your NON-WINDOWS computer, it's completely different. I don't have a mac nor a chromebook, but you CAN just install the chrome extension, you don't need this software either way. It's not a virus, but I do agree you should be wary installing random .exe files :B. If you do use windows;
Download a .cur or aN .ani file, go to Settings > Printers and devices > Mouse > Additional Mouse options > Pointers
Change any of the preinstalled cursor sets, but click save as and save under a different name. It's probably the same on windows 11, or like somewhat similar.

