Vopium is quietly company who provided the low-cost low cost IP-based international calling. Now Vopium is launching the mobile VOIP application for iPhone and now available for download from the Apple App Store.

Vopium on the other hand runs practically invisibly. Following a simple download, new users get 30 minutes of talk time and 30 international SMS messages for free. Vopium reroutes international calls to a Vopium gateway and then via global traffic carriers as ordinary voice traffic, seeking out the least expensive method available.

The service is compatible with more than 500 handsets across Java, Symbian, RIM BlackBerry, and Windows Mobile. It takes a staff of more than 70 to slog through all the necessary coding. Unlike the common operating systems shared across virtually all desktop PCs, mobile phone operating systems can vary not just across manufacturers but even across different models within a single maker’s line.

The additional feature when it delivers significant customer benefit paired with little interference. Recently for instance the company released Vopium Sync, which automatically backs up a user’s contacts and calendar. It’s helpful to keep a contact list intact when switching to a new phone, and also useful for those wishing to receive automated reminders of upcoming events. It has been completely prove that Vopium is still success in the VOIP market.