The British Library has launched a new app that brings 100 of the institution's rarest items to your iPhone or iPad.

The Treasures mobile app presents high-resolution images of the world's oldest bible, sketches by Leonardo da Vinci and Nelson's battle plan for Trafalgar, among many other rare works.

You can browse through categories such as Science, History, Music, Literature, Faith and Religions, Maps and Views, and Illuminated Manuscripts and you'll also find highlights from the British Library's current 'Evolving English' exhibition.

There are audio excerpts and videos available, where expert curators guide you through the items on offer.

Frances Brindle, the British Library's director of Strategic Marketing & Communications commented: "Access to our collections through mobile technologies is an exciting initiative for the Library. We are delighted to be able to make our unique collection items available to a wider audience via this interactive app in such a dynamic format.

"The Library is committed to increasing access to its collections and broadening the reach of our services and this app demonstrates our commitment to engaging with the mobile community," Brindle continued.

The Treasures mobile app is available for the iPhone, iPad and Android-based handsets. The iPhone and Android versions usually cost £2.39 ($3.99 in the US) and the iPad version £3.49 ($5.99), but until 24 January they are being offered for £1.19 ($1.99) and £2.39 ($3.99) respectively.