The Flickr Ruby library by Maël Clérambault aims simplicity of API access. What it does is to map the methods of the official API docs. At the same time, it returns methods intuitively. This library is always updated because of the introspective features of the new methods added continuously by flickr.
Aviary, the photo editing suite that includes a number of Aviary APIs to incorporate photo editing into your web applications is moving its tools to mobile. Today it announced SDKs for iPhone and Android, as well as an impressively long list of launch partners who have already incorporated the platform in their mobile apps.
Apple's iOS Camera APIs make the iPhone a manual camera—for third party developers. Fleksy to be early out of the gate on iOS 8, but could use more APIs. Plus: Australian startup says it owns the "HealthKit" name, and Contract Logix a API integration.