Here's how you can download the Viber app free for your iPad, iPhone, iPad mini or iPod Touch.
1. Go to the Viber app preview page in iTunes (or tap the link on your iOS device to install the app directly).
2. Click the View in iTunes button.
3. Click the Free button to download the app.
4. Sync your iPad, iPhone, iPod Touch or iPad mini with iTunes to install the app.
Here's a description and screenshot:
"Viber lets everyone in the world connect. Freely. More than 140 million Viber users call, text, and send photos worldwide - for free.
Viber is available for the iPhone® and other smartphones. We are constantly introducing new features, platforms and possibilities.
Viber is completely free with no advertising and we value your privacy.
Arabic, Catalan, German, Spanish, French (France), Hebrew, Italian, Japanese, Portuguese (Portugal), Portuguese (Brazil), Russian, Chinese (Simplified), Chinese (Traditional)"