Effective 30 April 2025

This Cookie Notice describes how Tandem App, Inc. and Tandem SAS (collectively, “Tandem”, “we”, or “us”) use cookies and similar technologies on our domains, including *.usetandem.ai, in connection with the Tandem platform (including the widget and the app).

For general information on how we process Personal Data, please refer to our Privacy Notice.

1. What are cookies?

Cookies are small text files stored on your browser or device when you visit a website. They may be used for session continuity, storing preferences, analytics, and other functionality. “Similar technologies” may include local storage, session storage, and device identifiers.

2. Types of cookies we use

Type	Purpose	Example Providers	Typical Duration
Strictly Necessary	Ensure session continuity, security, and platform functionality	Tandem (first-party)	Up to 90 days
Analytics / Performance	Measure user engagement, feature adoption, and performance trends	PostHog (first-party)	Up to 13 months
Local Storage	Used by the Tandem widget for session ID tracking	Tandem widget	Persistent

3. Third-Party tracking

Tandem uses PostHog, a product analytics platform. PostHog may set cookies for session tracking, event deduplication, and user engagement measurement. These cookies are served *only from .usetandem.ai.

We do not use third-party cookies or trackers from ad networks or social platforms.

4. Consent management

Tandem acts as a data processor. Customers using our widget must:

Provide clear notice and obtain any required end-user consent under applicable laws (e.g., EU ePrivacy Directive, GDPR, or state laws in the U.S.).
Implement a Cookie Banner or Consent Manager if legally required.
Configure widget behavior or use API flags to respect user opt-out preferences.

Consent on app.usetandem.ai is managed by Tandem.

5. Managing your preferences

If you’re an end-user of a service powered by Tandem:

You should contact the website or app owner (our Customer) to manage your cookie preferences or exercise your rights.
Some Tandem Customers may offer opt-out options such as “Do Not Sell or Share My Personal Information” links or support the Global Privacy Control (GPC) signal.