A new year, a new you, another new dating app to try, but what makes Once so unique? Heart rate monitoring technology, apparently.
Essential reading: Best heart rate monitor and HRM watches
According to the matchmakers, your heart rate is measured by your smart wearable as soon as you open the app and begin viewing your daily match (one a day, hence the name).
Interestingly, the match itself is entrusted to a team of "human matchmakers", based largely on proximity.
Your average heart rate, already determined by your wearable, is used as a starting point when viewing your match. Once this has increased by more than 10bpm, it will register as an initial attraction, or 'Like' for the match.
The app, now available on both iOS and Android, allows you to keep track of your heart rate for each daily match to see who you've liked the most.
As well as offering a free service, Once also offers a paid subscription package, allowing users to receive notifications once messages have been read, send messages to any missed matches and even play cupid by picking their own daily match for the following day.
Only time will tell if Once really is quality over quantity.