Blockchain has been available on Windows Phone for some time, but we've failed to cover it until now. Billed as the first app on the platform to support Bitcoin, the app enables you to carry out transactions using the Wallet service (www.blockchain.info). The developer is also the same soul who was behind Web2Tile back in 2011.

So what exactly is Bitcoin? It's an open-source cryptocurrency where the creation and transfer of "bitcoins" is based on a cryptographic protocol that is independent of any central authority. The concept was introduced back in 2008, billed as a "peer-to-peer, electronic cash system". Bitcoins can be transferred through a computer or smartphone without an intermediate financial institution.

Think of it as an online, peer-to-peer, freedom bank.

Each user has a bitcoin address (slightly like email addresses on PayPal), which is essentially a cryptographic public key. Its string of numbers and letters is often stored in a digital wallet or mobile device and it is protected by a password (or other means of authentication). Each bitcoin transaction is signed by the private key of the user initiating the transaction. In this case, Blockchain is the bitcoin client that helps you interact with your online wallet.