No two friends are enjoyed equally. Some you would lie down in traffic for, take a bullet for, or, at the least, help move house. Others you wouldn't call unless you were certain it was free.
VHA today released a new app on both the Apple App Store and Android Market, and for once it's not a load of crapware. Who2Call is an address book replacement for Vodafone and 3 Mobile customers, which highlights your contacts that are a customer on either network, and therefore is a free call. You can select from two views, a full contacts listing or a cheapskate's view, showing only free calls.
Sticking with the cheapskate theme, the app itself is also free and available to download now. Free calling between Vodafone and 3 Mobile customers is available to anyone on a new post-paid monthly cap, introduced in March of this year.