Dating App Once Uses Your Heart Rate To Help You Find Love

We’ve all felt it — the little adrenaline rush and increased heart rate that comes when we meet someone we’re attracted to — but now we can track it.

Once, a dating app with more than 600,000 users in just four months, has today announced an integration with Fitbit and Android Wear.

Once works by offering a single potential suitor every day (which Once calls a “Match,” which is confusing). These ‘matches’ are curated by human match makers who check out your profile and those of other people you’ve liked in the past to determine who you might like next from the Once database.

Setting aside the fact that one of Once’s 120 matchmakers might be your friend who now knows your digital dating history, this is a huge differentiator for the European dating app, which is available across the UK, France, and in Spain.

With the Fitbit integration, users will be able to sync their fitness tracker with the app to see their heart rate in real-time when they first get a glimpse of that day’s match. Because the app shows both parties in a match their counterpart at the same exact time, this could allow for some fun push notifications in the future.

For now, Once just lets you see your heart rate when you look at your match’s profile. In the next version of the app, however, the user will be able to opt-in to a feature that will send their heart rate to their match once it’s recorded.