Using mobile phones to call phones in other countries can be pricey. Truphone believes in cheap international calling and is bringing that power to the iPhone with its new application. Truphone Anywhere works in 33 countries and charges as little as 4 cents per minute by passing calls through the Internet.The new service is called Truphone Anywhere. The application is free to download from the iPhone Apps store. Truphone had offered VoIP calling on the iPhone before, but Wi-Fi was required. Truphone Anywhere can connect calls through the Internet even without Wi-Fi.

Truphone Anywhere doesn't require a user to remember what to do. Whenever an international number is dialed from outside Wi-Fi, Truphone Anywhere simply asks whether he/she wants to make a Truphone call. The user accepts, and Truphone connects the call.

The whole system works by connecting the iPhone to a local Truphone server, which then connects the long-distance part of the call over the Internet. The local connection to Truphone is, typically, free because it uses bundled minutes from the customer's usual cellular service provider.

Truphone also is introducing another new feature, free iPhone-to-iPhone calling. It uses a presence feature so users can see if any other Truphone users are available to connect via a call. The new inbound call capability means that iPhone users can avoid inbound call charges -- for example, when abroad -- provided they are connected to a Wi-Fi network, enabling significant cost savings.

So what are you waiting for, download Truphone and start saving money on overseas calls!