(By "normal," we mean a non-gadget-obsessed person who isn't an early adopter of new technology)
Tinder is a simple dating app that anonymously finds out who likes your looks nearby. If you happen to think the other person is good looking too, it offers an intro. If not, the person never knows you weren't a fan.
It's basically a new-age version of Hot or Not that also allows you to meet people.