Everything you need is your phone and to follow these instructions: - Get your phone out of the case for better recording results - Lean your phone microphone to the lower abdomen area - Make sure you are in a quiet room IMPORTANT NOTES: - This is not a substitute for the professional medical care. For any medical questions or concerns during your pregnancy please consult your doctor. This app does not have a medical purpose at all. - If you’ve been pregnant for less than few months, you may have to wait until the baby’s heart is big enough. - It is recommended to activate the airplane mode while using the app for recording.