Carousel , a photo editing and sharing app from Adobe for the iPhone, iPad and Mac is now available to download from the iTunes and Mac App Stores.

The iOS version and Mac version are both free to download though to start using Carousel you'll need to sign up to a subscription, which costs £3.99 per month or £39.99 per year.

You'll need to set up the subscription through an iOS device, as the Mac App Store doesn't yet support subscription-based app. After downloading the app, you'll get 30 days use of Carousel until you have to sign up to a subscription.

Adobe announces Carousel cloud-based photo app

Carousel is based on Adobe's Photoshop Lightroom technology and lets you view, browse, adjust and share your photo collection without having to worry about manual syncing or storage. The apps interoperate via the cloud so that when you snap a photo or access an album, those images are automatically accessible from any supported device via what Adobe calls "smart mesh" technology.

"Currently, consumers have to endure a broken experience when it comes to accessing their photo library on multiple devices. Storage is limited, syncing across devices is challenging, sharing and collaborating is difficult, and the experience for adjusting photos is not the same across devices," said Chris Quek, Carousel's product manager.

"Adobe Carousel solves these problems by offering consumers access to their entire photo library; a consistent user experience across devices that lets people browse, adjust, and share all their photos using their Mac computer and any iOS device; the ability to easily share an entire photo library and improve photos with your friends and family; and simple setup."

It supports multi-touch gestures letting you browse photos and apply edits such as adjusting exposure, shadows, highlights, white balance, vibrance, clarity, and contrast. There are 12 stylized Looks that let you experiment with different photographic styles nondestructively.

Photo sharing is another key function, as Carousel lets subscribers invite friends and family to collaborate on a photo library free of charge. Anyone with a Carousel enabled device can view and contribute photos, apply Looks, flag favorites, and otherwise edit an album. The app also lets you share photos via Facebook, Twitter, Tumblr, or email.

The £3.99 per month, £39.99 per year price is a special introductory price available until 31 January 2012. Anyone subscribing at the introductory rate will be able to renew at that same price for an additional two years. You'll automatically receive any enhancements and updates to Adobe Carousel at no additional charge.