MLC Chat allows users to chat with open-source language models locally on their iPad and iPhone. After downloading a model into the app, everything runs locally without needing server support or an internet connection, and no information is recorded. Due to the model running locally, it is only suitable for devices with sufficient VRAM, depending on the model used. MLC Chat is a part of the open-source project MLC LLM, which allows for the local deployment of any language model on various hardware backends and native applications. MLC Chat is a runtime for running different open-source model architectures on your phone. The app is designed for non-commercial purposes. It allows you to run open-source language models downloaded from the internet. Each model may be subject to the constraints of its respective license.