It belongs to what you need.
If you only need a simple way to contact to your friends or someone else, Whatsapp is good choice
If you want more funtions and want to even do business, you should choose facebook
Facebook is offering more updates throughout the world what's happening we'll get instant timeline updates. It has introduced live video also which is going viral in the world.We can use whatsap for chatting purpose.
Dear,Leo privacy is very safe in hiding files. And if u want a apps of hiding videos & photos ...Its a great applock and thanks to developer keeping it up. so download it simply and it will protect privacy for u......