Whatsapp Online tracker

I need an android application that can track and monitor whatsapp online status for selected contacts, like this application
i need app only for playstore

https://play.google.com/store/apps/details?id=com.lat.onlinemonitor
https://play.google.com/store/apps/details?id=com.af.whatlogin

Features :

- Same features than demo app

- Track / Monitor selected contacts online status as the demo app

- Create alerts when a selected contact is online or offline

Please bid only if you already have prior experience in this same exact field, proof it

Skills Required