The new voice-messaging feature has no time limit, so you can send as short or as long a voice message as you want. Whatsapp is smart about how it plays received voice messages too – the app’s volume level changes depending on how you’re holding your phone.
Over 300 million people worldwide use Whatsapp as an alternative to SMS-based text messages. The secret behind its success really isn’t much of a secret: The 99-cent-per-year app lets you jettison expensive texting plans by using your phone’s data plan to send messages.
You can learn about the new voice-messaging feature by watching the video above. Whatsapp is currently available for download on Android, iPhone, Blackberry, Nokia and Windows Phone devices.