Yes, it is anonymous; users see only a profile picture. If you assume that the profile picture might reveal your identity to your spouse or girlfriend/boyfriend, no need to worry. There is no option to see profiles; there are no search filters, lists of profiles, etc. The only time you see someone’s picture is when you are matched with someone nearby. And assumably, your significant other is not using Pure, and you won’t get into trouble. The reviews claim it’s working.