WhatsApp Intro
9 years ago, a subsidiary of Facebook started working with a cross-platform messaging and Voice over IP service as a freeware and got its name WhatsApp. It is serving over 180 countries having access to more than 1 billion people and allowing them to stay in touch with family and friends anytime and anywhere.
It is a reliable, secure and simple service that is available all around the world by just providing the valid phone number.
What they offer?
They have a great team that has built up the service which supports sending and receiving a variety of media; text, videos, photos, documents and locations. They have surprised the world with an alternative to SMS. It relies on data to send messages like iMessage or BBM, so it doesn’t cut into your monthly text allotment and have the majority of users in Europe, India and Latin America.
Recently they have worked on their application and have launched out a new feature of a new status just similar to Snapchat and Facebook. Now they are moving on with WhatsApp Business launch that will work for small business use.
How it started?
The journey of the app got started in January 2009 by its two founders Brian Acton and Jan Koum. But the actual story started long before when both left the Yahoo! in 2007 and moved on for a break. They then realised the power of app and decided out to make one. They then hired the iPhone developer Igor Solomennikov and began an early version of WhatsApp that mostly showed the crash status on use which was later corrected giving it a final touch in November 2009. The application raised the initial funds from Sequoia Capital and got managed to grab the place in business getting 200 million active users and 50 staff members by 2013.

In 2014, it was acquired by Facebook in US $19 billion and became the most popular messaging app globally.
Is it secure?
It works for iPhone, Android, Blackberry, Symbian and Windows devices. It is secured for every device as said by them that messages are encrypted and are not stored on its server.
In the end, it is the most popular multi-media messaging app on the planet.