Kicks!

I think I’ve read somewhere that you’re not actually meant to count kicks but more to get a sense of what movement is normal for your baby. I am currently pregnant with my second and have never used a kick counting app, but I have a pregnancy journal in my notes app where I write down symptoms every now and then :) I do however tend to be quite anxious so counting kicks and then having fewer kicks on a different day could easily drive me nuts

Counting kicks is not recommended anymore (in the UK at least). It's more important to get to know your baby's pattern of movements (or lack of pattern! Some stay pretty random the whole time!)

Also there's many movements other than kicks you can start to feel later on, rolls and stretching and even hiccups!

Agreed with the above, look for patterns of movement for example baby is active first thing in the Morning, after lunch, and just before bed. Although at your GA, a pattern may not be established yet
You'll send yourself loopy trying to count kicks, and agree that you feel all different kinds of movement as baby grows not just kicks