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The IMS Question and Test Interoperability (QTI) specification defines a standard for representation of assessment content and results, supporting these materials to be transferred and delivered in multiple IT systems. The ability to import these learning questions and assessment results in mobile contexts offers greater flexibility and interactivity for learning. With the development of mobile technology, some recent mobile devices have the capability to provide a platform on which more complex applications could be implemented and therefore have the potential to be used as powerful offline learning tools. In this paper, we describe a mobile QTI rendering architecture and tools built on top of the core software library of “ASDEL” to deliver an assessment consisting of an assembly of QTI items and retrieve assessment results. A mobile QTI engine is deployed upon an Android system that provides services for rendering and processing QTI xml. It allows learners to play QTI items natively and get feedback effectively which enables better support for offline mobile learning.