Hi ,
WhatsUnread is about caring your whatsapp privacy.
WhatsApp has now blue ticks that says whether the other party has read the message . Other feature last seen says when is that ur online last time .Both of them kills the privacy.
There are real world situations when your friends/partner bother you saying that you haven't responded even though you read their message there by peeping into your reading and responding habits.So using this app you can read all your whatsapp messages in WhatsUnread app there by not letting your friends/partners know that you read their message and respond at your convenience. Honestly save your relationships :-)