React Native RAG is a new local library that enhances large language models (LLMs) with Retrieval-Augmented Generation (RAG) capabilities, allowing for improved, context-rich responses by retrieving relevant information from a local knowledge base. It offers benefits such as privacy, offline functionality, and scalability, while providing a modular toolkit for developers to customize their implementations. The library integrates seamlessly with React Native ExecuTorch for efficient on-device processing.