The app takes advantage of users WhatsApp public online/offline status feature.

In other words, the app allows users to spy on their WhatsApp contacts.

It can even estimate what time they go to sleep and wake up each day.

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What is creepier is that Chatwatch allows users to monitor and analyse two users WhatsApp activity.

The report adds, Its also likely that WhatsApp will find a way to block Chatwatch soon.

So if you want to spy on your friends expose Facebooks privacy issues, you should try it soon.

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Currently, Chatwatch is available on Android platform as ChatW.

Apparently, the developers are said to be working on a web-based version.

source: www.techworm.net