Once you have downloaded the Facetime app for your Windows 7/8/Xp you can call your friends & family for free of cost. It will use front-facing camera of your Laptop/PC/Desktop when you are talking to your friend or relative.eatures of Facetime for PC: The app is very simple & it’s free of cost. To make use of this app you need Wi-Fi data connection & you can njoy the conversations with your friends & family via video conferencing. The minimum requirements for Facetime PC app are as follows. 1  Windows XP/7/8/Vista.