An updated, mature version of the application (taking into account the experts’ feedback) was then tested by 30 elderly users (with various chronic diseases). Evaluation was based on completion of specific tasks (scenarios). The users had the REMOTE system installed on their mobile phones. Calculation of task completion success rates was based on both users’ and facilitators’ ratings. Users had to state if they thought they successfully completed each task and at the same time the facilitators recorded their own rating. The average score from both facilitators and user gave the overall user success rate for the Guardian Angel application, which reached 97.5%. This is quite impressive taking into account that most users (83%) were not acquainted with touch screen mobile phones.