You can use WhatsApp on your iPad with this app and you can also have 2 numbers of WhatsApp in your iPhone.
Just like the web version of WhatsApp, the "Messenger for WhatsApp" is an extension of your phone, which simply mirror your conversations and messages as they are in your phone device, that means, all your messages remain originally saved on your phone .
To connect, open the "Messenger for WhatsApp" and you will see a QR code, simply 'scan' this code using WhatsApp on your phone and you will be logged in. You will find this option within WhatsApp settings on your phone, at "WhatsApp Web" menu.
Your phone must be connected to the internet for the "WhatsApp Messenger is" to work, and in addition, make sure you have the latest version of WhatsApp is available for your phone.
Our team is working hard to implement more features and improvements as we have in WhatsApp for phone.
Most of the features of the web version of WhatsApp are currently supported.