NHS App documents NHS App technical details and information we publish in the open. NHS App master data specification This document sets out the data used in the NHS App and explains how each data item is processed, retained, and used across different services. You can use it to understand what information the NHS App handles, why it is needed, and how it connects with wider healthcare systems. View the specification NHS App technical specification This document gives a technical overview of the NHS App, including how it is built, the main services it supports, and how it connects with NHS and third-party systems. View the specification Last edited: 2 July 2026 4:26 pm