I have been using this app for the past 4 years. Whatsapp Messenger is also available for the both iPhone and android. This app lets you chat for free with anyone else who owns the app and offers a few extra useful features to make text messaging more fun with this app installed on your smartphone, you will save a little money on text charges through your carrier and across platform.
Whatsapp messenger uses push notifications to allow users to send each other unlimited text messenger without data limits. Messages are encrypted(completely private) and users can literally send a million messages a day and not be charged.
As with most messaging apps, teens can send text, videos, documents and GIFs to individuals or groups, makes calls and use filters. Within a chat teen can use live location to share where they are and stop sharing whenever they choose.
Although the app is very useful in many purposes.