What is the "ratio reply notification"?

So I use a smartwatch to get the notifications I care about most, like texts and stuff. I’ve noticed that Tree sends out notifications that are titled “ratio reply notification.” I’ve never seen them on my phone, but I get them on my watch. I assume they’re silent and or minimized and appear pretty briefly. In the notification section for Ratio in my phone’s settings, there’s a “responder notification” that is silent by default. Is this it?