The cost to develop contact tracing apps like the NHS COVID-19 app depends on the range of features, privacy standards, and technical infrastructure required to support accurate and secure exposure tracking. Such apps typically include Bluetooth-based proximity detection, anonymous user identifiers, exposure notifications, secure data encryption, and compliance with strict privacy reg... https://usmsystems.com/how-much-does-it-cost-to-develop-contact-tracing-apps-like-nhs-covid-19