A testing device which provides testing relating to a health parameter monitoring device and/or a health monitoring application run at a user device is disclosed. In one embodiment, the device comprises: a transceiver which receives a control signal from a controlling device a health parameter monitoring device connection port which connects to the health parameter monitoring device a user device connection port which connects to the user device and a plurality of simulation apparatus configured to electronically recreate one or more physiological parameters of a user according to the control signal. The physiological parameters are monitored by the health parameter monitoring device, which provides a plurality of data relating thereto to the user device for entry within the health monitoring application. The user device outputs at least a display of the health monitoring application to the controlling device for analysis thereof. Systems and methods for performing testing are also provided.