Keep track of your blood pressure readings: Use it to copy values from a stand-alone blood pressure meter. This app does not measure blood pressure!
Blood Pressure readings as well as settings are stored within the app only. If the users chooses to do a backup to SkyDrive/OneDrive or a Excel-Export this data is copied onto servers mangaed by Microsoft. Thorsten Lange has no access to this data.
The free version contains advertising. Therefore some data is sent to AdDuplex who provides the advertisments. This data contains user’s IP address, aproximated position (no GPS access), device manufacturer and model, device operating system and firmware versions, technical details about user's device (screen size, resolution, network connection type, mobile operator) and the app installation identifier. See adduplex for more details.
Additionally non-user-realted usage data is collected to improve the user experience in future updates. These is only the very basic usage data and crash reports to identify bugs that any Windows Phone App sends to Microsoft. This data is processed on Micrsoft servers and is available to Thorsten Lange.