TK had a question in the comments on the download page, so I copied the app to a Win11 VM, monitoring 1st run & activation. Here are the details...
I copied the program folder to my Win11 VM, monitoring 1st run & activation. It added the Users\ [UserName]\ AppData\ Roaming\ Light Developer\ folder with 2 1KB files - my regular copy of Windows has 4 files, three 1KB & one 0KB, plus a Users\ [UserName]\ AppData\ Roaming\ Stepok Softwares\ folder with 0 files. The registry got one new key for Stepok [stepok.com]. By copying the program folder I avoided the installer registry entries and the Microsoft C/C++ runtimes, which add several files and quite a few new registry entries. FWIW, most Franzis apps add a folder sharing the app's name in Users\ [UserName]\ with 10-20 files.
A 2nd FWIW, I normally install Franzis giveaways in a VM, then copy the app to a folder used by my regular copy of Windows, running & activating it there. The added registry entries & related files from the installation routine aren't bad & don't bother me, but the older C/C++ runtimes also installed may need updates, add a bit of redundant bloat, and may even screw up using the newer runtimes already installed.