A device for monitoring and tracking a weight training workout, namely, an electric device for attachment to free weights or to a home or gym strength resistance machine that measures in real-time metrics of a user's workout, including concentric, eccentric and isometric workout durations, range of motion, repetitions and rest between sets; downloadable software for use in connection with a weight training workout, namely, software downloadable to a user's cellular phone or a tablet or wearab...