Meet Shell by Bellabeat: a smart baby heartbeat listener that uses a non-invasive method to allow pregnant moms to record listen to their baby’s heartbeat. You can also use it to keep track of your baby’s kicks on a daily basis to figure out when sudden changes happen. Shell connects to your iPhone and filters out background noise to deliver the best results.
Shell was inspired by the Pinard horn. Its app lets you monitor the data conveniently. More info is available here.