Anyone who uses grindr app have any idea when you put 'show distance' as off does this mean other users can't see how far away you are? As thought it would but on my pen user profile says myself is '0km away' on my own profile so is it still showing up how far away in km I am too other users too? As I thought putting show distance as off it would disable this?!

It should do that but perhaps it isn't saving your changes properly as sometimes when you edit your profile it doesn't save.