Web.whatsapp.com is a computer based extension of WhatsApp. It is used to sync your WhatsApp account to your desktop where you can use either of the opened account and both the accounts will get synchronized simultaneously. This is very good concept and I am very thankful for this development. This is very helpful too as I had to do many works via WhatsApp and by syncing in desktop I save my mobile battery and my work is also done faster.
WhatsApp is one of the best social messaging application present in the market so service and support from their team is very good. It takes few seconds to sync and you are good to go. Works very fast. User interface is ok. Whatever is there on the app you will find it in the extension. Content is same, nothing fancy. It works quickly and very fast in loading and messaging. Once your phone and desktop are connected to the internet and synced you are ready to enjoy the extension. This is very much recommended as it will help you to work faster.