Hindi ako personally gumamit ng BabyPlus, but a few of my mum friends tried it during pregnancy and they loved the idea of talking and playing music to baby in the womb, parang bonding na agad! Honestly, I think what matters most is that you're engaging with your pregnancy and baby habang buntis ka pa lang, whether it's through that system or just talking, singing, or playing music on your own (which is free, lol). If you have the budget and it makes you feel more connected during pregnancy, go for it, pero not a must-have if you're tight on cash, your voice and presence lang is already enough para sa baby mo.