Do you want to get notified when number becomes online on WhatsApp? Of course, you do! 
WhatsOnline is a professional online last seen analysis tool for WhatsApp online tracking.
Find out when number becomes online.
During the tracking time, you will be able to know how long he/she was online, how many times he/she has logged in and out.
Even if his/her last seen is disabled, you can still track and see it instantly and receive notifications.
You can also see how much time he/she was online on WhatsApp online in a day.
Key features
Instant notification
Detailed statistics
Last seen times
Online durations
Multi number tracking
Blocked number tracking
WhatsApp online durations
