A new app aims to tell you which friends are worth keeping and which you should kick to the curb.

pplkpr is an app which works with a wristband to monitor a user’s heart rate. If there’s a spike in the user’s heart rate, it will ask if it’s stress or excitement. It will also determine which friends are linked to better emotions, and it will delete the contact information of friends who repeatedly have a negative influence on a user’s heart rate.

The app’s website reads:

This data is correlated with the people you interact with to determine who should be auto-scheduled into your life and who should be removed.

Kennedy, whose new show debuts tonight at 9p ET on Fox Business Network, discussed the app today with Shepard Smith.

She explained that the app is “trying to mimic an algorithm for human emotion,” calling it nosier than a mother-in-law.

Watch more above.