It is a cross-platform application, so users can easily exchange messages between Android, iPhone, Windows Phone and BlackBerry without paying for SMS – you need to be connected to a WiFi or have a cellular network.
So the approximate cost of the WhatsApp like messenger can be calculated as 660 hours x $35, which equals $23,1K for one platform.
The messages are saved on the corporation's server for 30 days.
Recently, another handy feature has been released – the option to send similar message to several people at once.
Developers use Google Play location services API for Android and Core Location framework for iOS app.
You can also combine instant chatting with hashtags to give users the ability to share their content on the social media.