A portable lower limb therapy device having a support base and a force transfer system. The support base includes an exterior surface suitable to slide on smooth surfaces and an interior surface suitable to receive and conform to a foot of a user. The force transfer system embodied through one or two cords integrated with the support base and operates to transfer force applied behind and above the foot of a user that is in the support base to the support base. The portable lower limb therapy device may be used with a wearable anchor that is attachable to the thigh of the user of allows for the cord or cords to be fixed in place for the performance of static progressive stretch therapy motions without requiring ongoing manual force.