Rakuten Viber Messenger collects some personal data to provide its services, but it emphasizes user privacy and does not sell personal information to third parties.

Rakuten Viber Messenger requires an internet connection to function; therefore, it does not support offline use for sending messages or making calls.

Users can cancel their subscription to any paid features through the app settings or the app store where they originally subscribed.

Rakuten Viber Messenger offers some paid features, such as Viber Out, which allows users to call non-Viber numbers for a fee; the costs vary based on usage and destination.