The alpine space is characterized with rural regions, often hard to reach for mobile care. As part of the EU-funded INTESI project, a mobile platform for vital sign self-monitoring for patients who receive mobile care was developed. Based on a thorough analysis of user requirements and available technology a platform was established, that integrates several Bluetooth low energy devices for measuring vital signs. The developed VITAMO app further enables clients and nurses to easily govern measurements and jointly take control of a client's health during the care process. In addition, the system supports the communication of clients and nurses electronically. The internal data structure adheres to current healthcare standards e.g. FHIR and offers easy interfaces for future applications. The complete system was applied in a pilot study and got formally evaluated.