Apple has revealed the US and UK pricing for iCloud, its online account that allows users to store their music, photos, files and contacts online, and then wirelessly access then from a number of different devices.

The service, which was first announced in June but is expected to be made available in the autumn alongside Apple iOS 5, the next iteration of the Apple operating system, comes with 5GB of space for free.In the US, an extra 10GB will cost $20 (£12.25) per year, while 20GB will sent you back $40 (£24.50) per year and 50GB is priced at $100 (£61.40) for a year. Meanwhile, Brits will have to fork out £14 per year for 10GB and £28 for 20GB. Finally,  50GB is priced at £70 in the UK.

Apple has made the service available today to a limited number of developers.

iCloud can be accessed from all iOS and Mac OS devices as well as Windows PCs, and will allow any users working on a document in Pages, Numbers, and Keynote to save it to the service and then access it from any other device with those programs. This means not all of a user's documents and files can be stored in iCloud.

Any pictures snapped or imported on to an iOS device will automatically be uploaded to iCloud, thanks to the Photo Stream service, and then will be wirelessly pushed to all of your compatible devices. Apple will store the most recent 1,000 photos on iCloud for 30 days.

Meanwhile, iTunes music files brought from the iTunes store will also be stored in iCloud and will be available to all your devices. However, music ripped from CDs will not be supported. You can match these to songs in the iTunes store, however, in a process called iTunes Match that Apple claims takes minutes, and offers the same 'rights' to those music files as songs purchased from iTunes. iTunes Match will cost $25 a year in the US. UK pricing and availability has yet to be announced.