During a Friday appearance on "Live With Regis and Kelly," Kate, 35, told Kelly Ripa and guest host Anderson Cooper that tensions remain between her and her ex-husband, 32.
"It's ... you know," she said. "I do try to keep it as peaceful as possible." The level of tension "depends on the day."
The biggest issue, Kate said, is the time their eight kids spend at their dad's nearby apartment.
During those visits, Kate said, "I basically wait for the phone call from how many of them want to come home."
Jon's residence, she explained, "is not [their] home; it doesn't feel like home to them ... they want to be at home, in their house" in Wernersville, Penn.
She pointed out that the latest visitation schedule (part of their custody arrangement) is still "new to us. It's only been three months that he's actually been spending time with them and taking them."
Jon Gosselin caught his ex-wife's TV appearance and lashed out via Twitter:
"As much as I want to respond to numerous LIES recently claimed on Regis and Kelly, I will refrain. I have learned from the past that it's a waste of my time and energy. I am 'rising above', and refuse to engage in any sort of public argument that could potentially harm or upset my children. My children and the people in my life know the truth, and that is what's important."