api.mixpanel ?? What is that??

I have noticed that when Ninox is loading api.mixpanel.com pops up bottom left while my DB is loading. Does anyone have an explanation for this?

"

What can Mixpanel track?

Mixpanel is a user analytics tool that allows you to track how users interact with your Internet-connected application. Data is sent from a user's device or your server to Mixpanel, where it can be analyzed in real-time to better identify trends and understand user behavior"