Hi,
Sorry we don't speak Spanish, you'll have to translate this reply.
Socks is just an accessory you can give to the girl for a more pleasant view, they also make 'sockjob' available (footjob with socks) and there's more clothes to take off, so you get some credits for that. Besides that they are purely cosmetic item.
P.S. there is only one dev - he develops the game solo 😉
Cheers