This app use microphone to visualise your baby's sounds in the uterus (Heartbeats, Movements, Kicks, etc). It listen to your baby's sound, turning it into visual waveform. You can record the sound, and export the recordings via email, Twitter or WhatsApp, etc. This app also works well for measuring BPM ( Beat per minute) for adults. For best results, use after reaching week 30. Recommend to use the app in a quiet room to reduce background noise. Remove the device from case to maximize microphone sensitivity. Switch to airplane mode to disable all communicate and to create a safe environment for your baby. This app is NOT a medical device, and NOT intended as a replacement for medical advice of any kind. For any medical questions or concerns regarding your pregnancy and your baby’s health, please consult with your doctor.