Your mileage may vary, but I'm not impressed trying it out with a couple of 35mm negative scans, especially compared to my current workflow using Photoshop & Luminar Neo. It didn't do anything with the noise / film grain, did not do any sharpening, did not set or optimize levels or white point, did not balance colors etc. It did lighten the darker areas of an indoor shot, and it over saturated the blue sky in in an outdoor shot, while adding a slight green colorcast. It does not have much in the way of hardware requirements, working fine in a VirtualBox VM -- in contrast, some features in Photoshop won't even work if you try to use a GPU built into the CPU. While it does initially connect to Leowo's servers [IP: 172.66.40.237], CPorts [Nirsoft] shows it soon drops that connection. That said, while processing a photo Task Mgr. showed one or two momentary blips at .1 Mbps. The setup file for installing Photoins is a downloader -- the actual setup file [just short of 1GB] is saved in your Windows Downloads folder & run. Besides the program's folder you get folders in ProgramData, and Users\ [UserName\ AppData\ Local\ & Roaming\. You also get a few empty folders in your Pictures folder. Registry impact is minimal, though you do get a new service added.
Photoins v. 4.0.0.2 is similar to the recent GOTD DVDFab, with one app having several, individually licensed modules. In this case we're given one out of 3, photo enhancement. When you start Photoins you're shown a window with all 3 modules that stays open when you click on the photo enhancement module. Opening a photo gives you a thumbnail -- double-clicking that opens the editing window. That editing window has 3 buttons along the bottom to turn on photo enhancement, face enhancement, & enlarging, while a scale lets you decrease the amount of FX applied. A fourth [to me odd looking] button saves the results to a jpg, png, or tif file, with options to append text or numbers to the filename.