I don't see what that has to do with anything, but _I_ would call a promiscuous person "promiscuous". AFAIK not all users of Tinder are using it to be promiscuous.

In slang terms I'd imagine "tinderslut" being applied to men and women. Certainly as many women (more?) use it as a hashtag on twitter, https://twitter.com/hashtag/tinderslut, but I think they're using it for women - didn't analyse the results beyond noting as many women appeared to be using it in the results returned to me. The usage seems to be more liberal than referring to promiscuity, rather there's a general sense of unacceptable flirting being indicated in the term, I'd say. Others will have far more knowledge of it I'm sure.

The blogspot user who titles herself "tinderwhore" refers to male users as "tinderbros".