From the rest of Mozilla Foundation:
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Read our privacy expert's review of the Ultrahuman Ring AIR. Our reviewer likes that it can work offline without any subscription fees, a feature that has garnered a significant amount of goodwill from its users. However, you're still locked into Ultrahuman's online-only ecosystem.
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Read our privacy expert's review of the Oura Ring Gen 4. While Oura says the right things about data protection in their privacy policy, there's no getting away from the fact that the product doesn't work without cloud connection, meaning that your most intimate health data lives on servers you do not control.
