Bought got you APP due to good reviews on the internet, but it does not really run. Problem: the works with the built-in phone GSM sensor or motion sensor. Unfortunately, it is the sensilibilitat not adjust. The APP recorded permanently movement although the cell phone lying on the floor. Crosscheck with an APP (sensor) that the values of the motion sensor indicates that the sensor properly funzt. In troubleshooting is: Calibrate sensor! I do not know how that is when the working properly. Idea of APP good, but unfortunately not developed to the end ...