Good application – Rakuten Viber Messenger Review

Very Useful for long distance and international calling and texting, but only when you are connected to the Internet. If you're connected to the Internet calls essentially are free to other persons who are also connected via Viber. It is a bit hard to figure out how to use for free, whom you can call in your contact list and not have to pay for calls. Also it keeps offering Viber Out but tells you nothing about what it is and how it differs from Viber - rather annoying. It seems Viber Out works a bit like Skype in that you pay a low rate by the minute.
Review by Mdgwind on Rakuten Viber Messenger.