Idea of an App "WA Stalker"

My idea is of making an application for knowing my friends are are online on WA (WhatsApp). Following are the details I thought about the application.

• We should be able to see WhatsApp contact list in WA Stalker with names of users and left and green/red circle on right to show the user is online or not.
• We should be able to make groups of different contacts like colleagues, friends, family members and we will be able to see if they are online or not.
• If WhatsApp makes changes like sending a message which wont appear not recipient's WhatsApp will help us to find if the internet connection of that user is on or not.

Applications of this App are following -

1. If you are in any emergency then you can see who are online so they can come ASAP.
2. Suppose you are planning to troll one of your friends then you can first check that the person to be trolled is online or not and you can tell your online friends to troll him. Making a group of your friends on WA Stalker will speed up this process.

These were small applications but you can use this app for 'n' number of applications.

I would be the happiest person if anyone wants to make this application. You are always welcome welcome to work on this idea. Just let me know if anyone is working on this so that I can help him with some features.