FlickrKit is a library written in iOS Objective-C to help developers access the Flickr API. It is currently used by the Galleryr Pro iPad app.The library requires iOS 6.0 or above and has not been tested with older iOS versions.
Of all the hundreds of tags you can see in our mashup tag cloud, the second most popular behind "mapping" is "photo". How popular? As of now there are over 200 photo-related mashups listed at ProgammableWeb -- 202 by today's count.