About Corona SDK
High performance. Rapid development. Corona is a fully hardware-accelerated game engine framework with an easy scripting API. Games will run at native speeds in OpenGL on iOS and take full advantage of hardware features like accelerometers and multitouch. Corona makes it easy to deploy assets across multiple screen resolutions, using Corona’s automatic content scaling and high-DPI asset substitution.

Read more: http://www.apple.com/downloads/macosx/development_tools/coronasdk.html