Owlet Monitor Duo

Single app monitors both camera and sock ; Sock tracks heart rate and blood oxygen level ; No subscription costs to consider

Can't invite other users without sharing credentials ; Base connects to sock via Bluetooth, which limits range

The Owlet Duo includes a baby monitor and smart sock that track not only your infant’s movements and sounds, but also their heart rate and blood oxygen level. The combination is pricey, but provides valuable peace of mind.