It could be a great 1 EXE tool in the easy screenshot taking category, but...
1. It's completly broken: every picture has an unsolicited white frame instead of proper transparency handling. [Win 10, latest updates, Ryzen and AMD base, latest drivers]
2. The other problem is with the default watermarking. If you really want to do a great free app, forget this shitty practice! Instead: let the user pick their own text if they want to!
3. Also: there's no option to turn off the background, which is unbelievably dumb. If you want to make a great little tool, than go back to drawing board and let the users choose between options made with sense (for example: custom shadow on transparent background, or you know: exact cut without any background).