Pregnancy can be a time of anxiety, with women wondering how their babies are doing. Now a new app for use with Apple devices lets pregnant women track and share data on their babies’ health wirelessly.

App developer AirStrip was founded about eleven years ago, initially developing an app that allows hospitals to transfer data from medical devices to doctors wirelessly. Today, more than 30,000 doctors and 500 hospital systems use the technology, according to Fox News.

Now the company is launching a new AirStrip app intended for use by patients, starting with pregnant women.  The app makes use of body sensors that track the baby’s heart rate and maternal contractions, and delivers the information to the users iPhone or Apple Watch via a Bluetooth connection. The device can then send the information directly to the user’s doctor for analysis.

Doctors like the technology because it can save them and their patients from making unnecessary trips to the hospital, according to one doctor who uses the system at a leading New York hospital.

While the device is currently primarily for obstetricians, cardiologists are also finding it useful in tracking heart patients and preparing for serious heart attacks. Some doctors are hoping that the app helps to raise awareness among patients about the need for early intervention in heart trauma incidents.