Tidepool Cookie Policy

Last Updated: April 20, 2026

TAt Tidepool Project (“Tidepool,” “us,” or “we”), we believe you should own your data and be able to control how it’s used. This Cookie Policy explains how we use cookies and similar tracking technologies in our software applications, including Tidepool for web, Tidepool for mobile, and the Tidepool Uploader (collectively, the “Tidepool Apps”), as well as Tidepool’s website. Every time you visit our website, you will be prompted to accept or refuse cookies. This policy should be read alongside our Privacy Policy and Terms of Use.

What Are Cookies?

Cookies are small files stored on your device (computer, smartphone, or tablet) when you visit our website or use our applications. They help us recognize your device and remember certain information about your preferences or actions.

  • First-party cookies are cookies set by Tidepool. Only we can read them.
  • Third-party cookies are set by external services when we embed their content or functionality on our website.
  • Persistent cookies remain on your device after you close your browser.
  • Session cookies are deleted as soon as you quit your browser.

Our Core Principles

Our use of cookies is guided by the same principles that govern all our data practices:

  • You control your data and how it’s used
  • We are transparent about our data practices
  • We use industry-standard security measures to protect your data
  • We only collect and use data that’s necessary to provide and improve our services

Types of Cookies We Use

Tidepool uses cookies for three specific purposes: to store your preferences, to make our applications operational, and to gather anonymized analytics data.

Visitor Preferences & Application Functionality

These cookies are used to provide a more personalized experience and enhanced functionality, including:

  • Remembering your preferences
  • Storing your consent choices

While not strictly necessary for the site to load, the Tidepool Apps will not remember your specific settings or permissions if these are disabled.

Essential Cookies (Strictly Necessary)

These cookies are required for the Tidepool Apps to function properly. For this reason, they do not require your consent. They enable basic functions like:

  • Secure authentication and login
  • Remembering your privacy preferences
  • Maintaining your session security
  • Basic application functionality

You cannot opt out of these cookies as they are necessary for the services to work.

Analytics & Performance Cookies

These cookies help us understand how visitors interact with our apps or website by collecting and reporting anonymous information. They do not collect any information that can identify you personally. They help us:

  • Understand how our services are used
  • Identify and fix technical issues
  • Improve our software and user experience
  • Generate anonymous, aggregate statistics

Third-Party Integration Cookies & Local Storage

Some third-party services provide functionality when you interact with certain features of the Tidepool Apps. Instead of traditional cookies, these providers utilize Local Storage, data stored directly in your browser, to ensure a seamless experience. Third-party Local Storage may be used for:

  • Analytics and performance monitoring
  • Error tracking and diagnostics
  • Enable embedded media and maintain playback preferences

The following services no longer set cookies but do utilize local storage to assist with content embedded from their services. Please consult the provider’s policy:

You can manage/withdraw your consent at any time by clicking the “Cookie Settings” button in our website footer. Most web browsers allow you to control cookies through their settings. You can:

  • View cookies stored on your device
  • Block or allow cookies
  • Delete existing cookies
  • Set preferences for certain websites

To manage cookies in your browser:

  • Chrome: Settings → Privacy and Security → Cookies and other site data
  • Edge: Settings → Privacy, search, and services → Cookies and site permissions

Clear your browsing history to delete all cookies already there. Most modern browsers allow you to prevent cookies from being placed. However, please note that blocking essential cookies will prevent the Tidepool Apps from functioning properly.

Data Storage and Security

All cookie data is stored locally on your own computer. For session cookies, this data is purged upon closing the browser. We use industry standard encryption (TLS) and the “Secure” flag for all authentication cookies to protect your data in transit. For more information about how we protect your data that we collect, please see our Privacy Policy.

Updates to This Policy

We may update this Cookie Policy to reflect changes in our practices or for operational, legal, or regulatory reasons. We will notify you of any material changes by posting the new Cookie Policy on this page and updating the “Last Updated” date.

Contact Us

If you have questions about our use of cookies or this Cookie Policy, please contact our Privacy Official at:

Tidepool Project 555 Bryant St., #429 Palo Alto, CA 94301 Attn: Privacy Officer Telephone: 650.353.2352 Email: privacy@tidepool.org

For technical support or to report issues, contact: support@tidepool.org
For security-related concerns, contact: security@tidepool.org