 The arm rehabilitation monitor arm is a device designed to measure arm movement in stroke patients. It uses a single inertial measurement unit IMU worn on the wrist to detect arm movements and classify them into either functional or non-functional movements. The device was evaluated using two datasets one containing functional assessments and another containing activities of daily living ADLs. The CNN and RF classifiers were able to accurately estimate the time spent reaching and the number of reaching gestures in both datasets. Additionally, they were able to differentiate between functional and non-functional movements in the ADL dataset. This suggests that the arm could be used to monitor arm activity in stroke patients in both clinic and home settings. This article was authored by Juan Pablo Gomez Aranataguay, Janice J. Yang and Anthony J. Hodgson.