WhatsApp-For-iPad
This is the full source code to develop your own WhatsApp Client for iPad leverage on WhatsApp Web. It support image saving, pdf viewing, push notification, as well as sending media like photo and documents.
More details can be found here, https://medium.com/@tangtungai/how-to-develop-your-own-whatsapp-app-for-your-ipad-pro-f9fc80ce918b