One of the latest dating apps uses a different approach. It literally uses your heart to help you find love.

 

Once is available for iPhone and Android. One match per day -
The only person who can see you, is the person you're being matched with.

-Matches are ALL Handpicked -
Once says: "We don't rely exclusively on machines :) Get someone that you actually like."

Mashable says:

On Tuesday, the company released a video detailing its latest feature. The app connects to your Fitbit or Android Wear device and measures your heartbeat as soon as you look at the profile picked out for you.

“If your heart races, then we can suggest people of similar physical and social attributes to you because your heart can not lie,” the narrator says in the video.