This program has potential, but I'm afraid there are just too many issues. There is a 30 sec. nag screen if you don't buy the licence. The UI is mostly French with a bit of English thrown in here and there. In addition the UI is not standard Windows UI. The program has not been idiot-proofed; I made it crash several times just by selecting buttons that were not "meant" to be clicked. It also crashed when I tried to sort my car list. To me there are way to many issues to even consider paying for it.
If you are wrong you can just cancel by clicking the checkbox "reset registry" in "parameter" tab.