WappBulk Contacts Filter v18.104.22.168 Not worked from 21.09.2016
This app can find active WhatsApp numbers and last a connect to WhatsApp (inbuild function of LastSeen). You can use this Filter or LastSeen now.
Official site: http://wappbulk.com
It can filter WhatsApp contacts from a list of numbers. Let’s say you have 10 000 numbers and don’t know which one is on WhatsApp. So this app will do this for you. No limit on this app, it filters 40-50 contacts in 3-5 seconds.