The Libon app is initially available for the iPhone and iPad, with an Android app set to be released in early 2013. Calls made to other Libon users are in HD quality, and can be made using either a 3G connection or via WiFi.
A voicemail facility is available, allowing people to leave a message if the recipient is offline, and the app can also support instant messaging, offering a cheap alternative to sending SMS to numbers based overseas.
Libon is supported in 95 countries, and stands against already established services such as Skype, Whatsapp and Viber.
Libon will be offered free to customers, however a premium upgrade is available for £1.99 via an in-app purchase, which will give users access to a larger number of features, such as customisable voicemail messages, plus message transcription which sends a typed message of a voicemail left to the handset. With Libon Premium, users will also be able to call other numbers that are not subscribed to Libon.
Orange is also reported to be working on a new technology that is set to make its debut next year, called Rich Communication Suite. This technology, which will also be introduced by other network operators, works across multiple device, and enriches mobile calls by adding chat facilities, live video access and file sharing.
You can download Libon for free from the Apple App Store. The app requires is compatible with the iPhone, iPad and iPod Touch, and requires iOS 4.3 or later.