1 Credit = Reconstruction of 1 image
Beholder Desktop is FREE for personal, non commercial use. For commercial use, or for academic use (research and teaching) you need one license for every machine that Beholder Desktop runs on.
If you have a Free account, running jobs will first consume any pay as you go credits you have and then consume your monthly credits. In contrast, if you have a paid for account (Hobbyist and above), then running jobs will first consume any monthly credits you have and will only consume any pay as you go credits you have once all the monthly credits have been used.