TidalSense is an AI-powered respiratory diagnostics company headquartered in Cambridge, UK, led by CEO Dr Ameera Patel. Its software device, N-Tidal Diagnose used in combination with N-Tidal hardware, uses AI-analysed tidal breathing — rather than the forced exhalation required by spirometry — to deliver a fast, non-invasive diagnosis of COPD in under five minutes, without specialist training or hospital-grade equipment. N-Tidal Diagnose is the first non-spirometry AI diagnostic device to receive a CE mark under EU MDR (class IIa) for COPD, and has been commissioned and used across multiple healthcare settings.