WhatsApp Messenger has been updated and has added in support for new devices and other improvements. The app is now at version 2.11.362 and the update went live on August 29. The exact size of the app will vary depending on the device you are installing it on.
WhatsApp Messenger has been very popular with between 500k and 1 million installs so far. Android 2.1 or higher is required for the app to function. The latest update brings with it Android Wear support, improved message storage reliability, and several bug fixes and improvements.
WhatsApp Messenger allows you to use 3G or WiFi to send messages to friends or family. There is no charge for the app for the first year of use and then it costs 99 cents per year after. WhatsApp Messenger supports multimedia video, images, and voice notes and group chats.
The update also adds support for stacked notifications, letting users see multiple notifications on their wrist by tapping the +1 button. Another cool Android Wear feature is the ability to dictate replies to messages from your watch. The app is available on Google Play right now.
SOURCE: 9to5Google and Google Play
You meant over 500 MILLION installs