App for fetal movement monitoring ...?

Tn

What app are you guys using to count baby kicks? Apparently this is important? And the OB told me to keep track. I’m 34/1 and baby rarely STOPS moving so it seems like a moot point, but I guess it slows down towards the end. I just want a super easy and basic app that I don’t need to “figure out” how to use cause I’m already way too overwhelmed lol