Microsoft vs Oura

Microsoft's privacy statement covers an enormous product surface — Windows, Office, Azure, Bing, Xbox, and Copilot — and the data practices vary dramatically across them. The umbrella policy is deliberately vague, deferring almost all specifics to product-level documentation. Cross-product data combination, AI model training on your content, and employer/school access to your files and communications are the key risks most consumers don't realise they're accepting.

Oura collects a lot of sensitive health data to run the service, but they don't sell it, give you real control over it, and are clearer than most about what they do with it.