Whatsapp is fb owned app. Whatsapp is the fastest way to connect with anybody at anytime and anywhere. And is so simple to use that even child can use this app. And recently the app has added new feature of uploading stories which is concept of snapchat. And in todays date this app is found in each single smartphone. One can also operate the account on pc browser by using whatsapp web feature which works when the barcode generated on pc is scanned by smartphone and boom one can operate the account. And the interface is also simple and nice. Easy to operate and user friendly. The app is very usefull.