The apps use the smartphone's microphone to capture the sounds of the baby's heart. By placing the cell phone close to the mother's belly, the heartbeat is detected and amplified so you can hear it.

No, apps do not replace medical exams. They are a complementary way to emotionally connect with your baby. It is essential to continue carrying out prenatal care and follow the doctor's instructions.

Generally, apps can be used from the second trimester of pregnancy, when the baby's heart is more developed and the heartbeat can be heard more clearly.

Yes, the apps are safe for the baby. They only work by capturing and amplifying the sounds that are already present in the mother's belly. They do not emit any type of radiation or harmful signals.

We've selected some of the most popular apps for listening to your baby's heartbeat. You can check out what they are and their features in our content below.

Generally, no additional accessories are required. The apps only use the smartphone's microphone to capture the sounds of the baby's heart. However, it is important to follow the instructions for each application for best results.

Most apps are available for both Android devices and iPhones. However, it is always recommended to check the app's compatibility with your smartphone's model and operating system version before downloading.