The Lime dating app aims to pair people up based on how active or sedentary they are. Actually, it uses a bit more info than that to help people match but its connectivity with the iPhone's built-in Health app is what makes it most unique. Like other dating apps, Lime connects to a user's Facebook profile to gather a list of interests. However, it also calculates your steps and heart rate over the last seven days when determining the percentage of a match.
The Lime dating app also uses location to encourage meetups. If two potential matches are close by (distance is measured in steps) a "Go" request can be sent. These requests are for simple activities, like grabbing a bite to eat or a cup of coffee. The Lime dating app is currently available as a free iOS download with an Android version coming soon.