It is free from the licensing fees associated with modern Adobe software.
The interface looks like Windows XP. It does not support 4K or 5K monitors (the tool icons will be tiny). It does not have dark mode (though you can change the gray background). It lacks tabbed document windows. Adobe Photoshop 7.0 Portable
If you have a legitimate old license CD, converting it to a portable app is a fun weekend project. If you are just looking to save money, download Photopea or GIMP instead. Your security and your file compatibility will thank you. It is free from the licensing fees associated
Why would anyone use a 22-year-old portable program? Here are the real-world use cases. Adobe Photoshop 7.0 Portable