Social media plays a huge part here, firstly through Facebook friends, then via friends of Facebook friends.
Because women take their time scouring snaps before messaging, Dattch is touted as Pinterest-like, where you not only upload pics of yourself but of things that interest you.
It also includes news and blog content to create a community feel.
Best for private encounters: Tingle (i OS, free) Tingle lets you talk or text without revealing a name and number.
Specify your height, relationship level and a pic or two, and the app finds potential partners nearby without pinpointing a location.
Best for long-distance relationships: Between (i OS/Android, free) Between offers a private vault for storing and sharing memories with someone special.