Just like Facebook users, Whatsapp users are always looking for ways to see who viewed their profile. The forums are filled with users trying hacks, cheats and apps to access this list, but most pay with their time and money and never get anything out of it.
To my knowledge, it seems that the ONLY way to know who's viewed your Whatsapp is to send them a message and see if "two check marks" appear beside the message.
This signifies that it has been seen.
Whatsappp has no intention of letting you know who viewed your Whatsapp profile though.
Here's why:
Keep in mind that if people could see who was viewing each other’s Whatsapp profiles, people might stop using them. You would most likely not search through the Whatsapp profiles of other people if you knew there was a chance they might find out.
The “Whatsapp – who viewed me?” app is quite popular, but as it clearly states in the terms and conditions, it is a prank app that is only to be used to fool your friends. This app doesn’t really work and neither do any others that claim differently.