On my first I felt movements from 16 weeks (flutters/bubbles) & proper kicks that my husband could see clearly from 22 weeks.
However on this pregnancy, I didn't feel flutters until at least 18 weeks (very little at that) and the strong visible kicks only in the past 2-3 weeks (I'm almost 33 weeks now).
The main difference between both pregnancies is last time I had placenta previa, so the placenta was covering the birth canal & not my tum, so every little kick baby made was very obvious.
This time, the placenta is where it should be and padding between baby and my tum, so I don't feel the kicks as strongly this time.
I think for the same reason this is why I was able to find the heart beat easier last time using a home doppler, whereas this time I found it a lot more difficult to pinpoint the heart.