> For the complete documentation index, see [llms.txt](https://docs.senstream.com/senstream-researcher-ring-application-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.senstream.com/senstream-researcher-ring-application-user-guide/senstream-user-guide-intro.md).
# Senstream User Guide: Intro
Senstream, Inc. develops lab grade, user friendly wearables that provide full access to raw data.
[Download the free Senstream app](https://apps.apple.com/us/app/senstream/id1297743398) (requires iOS 16.6 or later) to connect to your ring and record session data.
**Please note:** The Senstream Researcher Ring is not a medical device and is not intended to diagnose, treat, cure, monitor, or prevent medical conditions or illnesses. The app is designed to record physiological signal data, but not to make medical decisions.
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