Can I add an iPhone to Google Family Link?

Oh my, this is so helpful to know! I’ve been worried sick about my grandkids and their phones, but I’m not very tech-savvy. So if I understand right, Google’s service won’t really let me see everything they’re doing on an iPhone? Are those Apple Screen Time controls easy enough for someone like me to figure out? I just want to keep them safe without feeling like I need a computer science degree!