Buyer Beware: I just found out today, after doing a update to Ultimate Video Converter that a purchased single user product isn't really yours. If you install it over so many x's according to Aimersoft Support emails they can take your 'privileges' of access away - in my case 1 product reinstalled 20 times over 6+yrs - Background: In that time, I have owned 4 different PC's because I regularly update for the newest tech for work, then add any OS installations changes, fresh reinstallments instead of updates plus a series of major reformatting after parts were replaced or repaired, and yes I put it on a old laptop while my PC was at the shop, but I only use when PC is not usable. According to Support Emails, I have to buy another license for $60 to get what I have already paid for years ago in good faith. What a Rip Off - I've suggested they put this info on their website - Don't get trapped