The disclosure refers to a method for validating a medical application on an end user device (101) configured for data communication with a medical device (102) by the medical application, comprising receiving a medical application in an end user device (101), the medical application being a software-implemented application and configured to provide for data communication between the end user device (101) and a medical device (102)； receiving a validation application in the end user device (101), the validation application being a software-implemented application； at least in case of a first execution of the medical application in the end user device (101), executing the validation application, comprising determining a software environment provided to the user device (101), determining a hardware environment provided to the user device (101), in response to the software and hardware environment determined, setting up a validation process for testing the software and hardware environment to be compatible with execution requirements for executing the medical application in the end user device (101), and testing the software and hardware environment according to the validation process； executing the medical application in the end user device (101), if the software and hardware environment are tested compatible with the execution requirements by the validation application； and blocking the medical application from execution in the end user device (101), if the software and hardware environment are tested not compatible with the execution requirements by the validation application. Further, an end user device (101) for data communication with a medical device (102) by a medical application, and a medical system (100) comprising a medical device (102) and an end user device (101) are provided.
