Many apps would benefit from sensing the face and the facial expressions, be it to improve interaction by adding new modalities to your interface, or by measuring a user’s engagement with your content. Our BlueMax technology is designed specifically to sense the face and analyse facial behaviour on edge devices. Designed to be light-weight, it runs by default on a single core with minimal use of CPU and memory, while still attaining state of the art accuracy on tasks including facial expression recognition, face tracking, head-pose estimation, and social gaze estimation. BlueMax runs on both iPhones and Android phones. We provide bespoke software integration support, followed by tier-2 customer support.