The difference between a smart bed and a smart mattress is where the technology is and what it controls. A smart mattress is all about the mattress, so you’ll find tracking and comfort/support controls that are designed to help you sleep better. When you buy a smart mattress, you’ll also need to buy a bed base too or you can fit it in your current bed base. A smart bed is when the technology is all in the bed base or headboard, so you’ll need to buy a mattress separately (and it won’t necessarily be smart).