Cookie Policy

Last updated: February 13, 2026

This Cookie Policy explains how Langadoo ("we", "us", or "our") uses cookies and similar technologies when you visit our website at www.langadoo.com. This policy should be read alongside our Privacy Policy.

What are cookies?

Cookies are small text files that are stored on your device (computer, tablet, or mobile) when you visit a website. They help the website remember your preferences and improve your experience. Some cookies are essential for the website to function, while others help us understand how you use our service.

We also use localStorage, a similar browser technology that stores data locally on your device without an expiration date.

How we use cookies

We use cookies and similar technologies for the following purposes:

  • Authentication – To keep you signed in and secure your account.

  • Preferences – To remember your settings like video volume and display options.

  • Analytics – To understand how visitors use our website so we can improve it. For more on how we use data to improve learning, see how we use spaced repetition in language learning.

  • Functionality – To enable features like A/B testing and feature rollouts.

  • Video playback – To enable YouTube video embeds on our platform.

Types of cookies we use

Essential cookies

These cookies are necessary for the website to function and cannot be switched off. They are usually set in response to actions you take, such as logging in or setting your privacy preferences.

  • better-auth.session_token – Authenticates your session when you log in. Required for accessing your account.

  • Stripe cookies – Required for secure payment processing when subscribing to Langadoo Premium. For more information about payments and refunds, see our Refund Policy.

Preference cookies (localStorage)

These cookies remember choices you make to improve your experience. They are stored in your browser's localStorage and do not expire automatically.

Key Provider Purpose Duration youtube-cookie-consent Langadoo Remembers whether you've accepted YouTube cookies for video playback. Persistent video-volume Langadoo Saves your preferred video player volume level. Persistent video-muted Langadoo Remembers whether you've muted the video player. Persistent player-settings Langadoo Stores your video player view mode preference (sidebar or large view). Persistent font-settings Langadoo Saves your subtitle and text display settings including font size, colors, and script preferences. Persistent

Analytics & performance cookies

These cookies help us understand how visitors interact with our website. All analytics data is used to improve Langadoo and is not shared with advertisers.

Cookie Provider Purpose Duration visitor_id Langadoo An anonymous identifier used for feature flag assignment and analytics when you are not logged in. Does not contain personal information. 1 year feature_flags Langadoo Stores your feature flag assignments for A/B testing and feature rollouts. Used to ensure you see a consistent experience. 15 days Umami analytics Langadoo (self-hosted) Privacy-friendly website analytics. We use a self-hosted instance of Umami to understand page views and site usage. No personal data is collected. Session PostHog analytics PostHog Product analytics to help us understand how features are used and improve the learning experience. Variable

Error monitoring cookies

Cookie Provider Purpose Duration Sentry Sentry (sentry.io) Captures errors and performance data to help us identify and fix bugs. May collect your IP address and browser information when an error occurs. Variable

Third-party cookies

These cookies are set by third-party services embedded in our website.

Cookie Provider Purpose Duration YouTube cookies Google (youtube.com) Set when you consent to watching embedded YouTube videos on our platform. YouTube may use these cookies for analytics and personalisation. You can decline these cookies and watch videos directly on YouTube instead. Variable Google OAuth Google Set when you choose to sign in with Google. Used for authentication only. Session

Your choices

Managing cookies in your browser

Most web browsers allow you to control cookies through their settings. You can:

  • View cookies stored on your device.

  • Delete cookies individually or all at once.

  • Block cookies from specific or all websites.

  • Set preferences for first-party vs third-party cookies.

Please note that blocking essential cookies may prevent you from using certain features of Langadoo, such as logging in to your account.

Common browser cookie settings:

  • Chrome: Settings > Privacy and Security > Cookies and other site data

  • Firefox: Settings > Privacy & Security > Cookies and Site Data

  • Safari: Preferences > Privacy > Manage Website Data

  • Edge: Settings > Cookies and site permissions > Manage and delete cookies

Managing YouTube cookies

When you visit a video page on Langadoo, you will see a consent overlay before any YouTube content is loaded. You can:

  • Accept YouTube cookies to watch videos directly on Langadoo.

  • Decline and watch the video on YouTube's website instead.

Your YouTube cookie preference is stored locally in your browser and can be reset at any time by clearing your browser's localStorage.

Managing preference cookies

Preference cookies (video volume, font settings, player settings) are stored in your browser's localStorage. You can clear these at any time through your browser's developer tools or by clearing site data for langadoo.com. This will reset your preferences to their defaults.

Data transfers

Some of our third-party cookie providers are based outside of your country of residence:

  • Sentry (United States) – Error monitoring

  • PostHog (United States) – Product analytics

  • Google/YouTube (United States) – Video hosting and authentication

  • Stripe (United States) – Payment processing

Where data is transferred internationally, appropriate safeguards are in place, including Standard Contractual Clauses where required under applicable data protection law. For more details on how we handle your data more broadly, see our Terms of Service.

Updates to this policy

We may update this Cookie Policy from time to time to reflect changes in technology, legislation, or our data practices. We will update the "Last updated" date at the top of this page when changes are made.

Contact us

If you have questions about our use of cookies, please contact us: