1. Coupler. Coupler is an app for couples to meet other couples — it touts itself as enabling dating for the 21st century. You and your partner can browse together and chat with your matches.

Can a couple be more than 2?

Couple is now understood primarily to refer to two when used as a bare noun (they make a nice couple), but is often used to refer to a small indeterminate of two or more when used in the phrase a couple of (I had a couple of cups of coffee and now I cant sleep.).