How many computers can I install DxO PhotoLab on? Can I use it on Mac and PC with the same license?

This information applies to version(s): 1, 2, 3, 4, 5

You can activate your DxO PhotoLab software on 2 computers  with the ESSENTIAL edition, and on 3 computers with the ELITE edition as long as it is never run on more than one computer at a time. You may install on both Mac and PC with the same license.