COOKIE POLICY
Last updated July 31, 2026
This Cookie Policy explains how Artem Yeromenko ("Company," "we," "us," and "our") uses cookies and similar technologies — in our case, storage in your own browser — to recognise you when you visit our website at https://www.lexiconcards.com ("Website"). It explains what these technologies are and why we use them, as well as your rights to control our use of them.
In some cases we may use cookies to collect personal information, or that becomes personal information if we combine it with other information.
What are cookies?
Cookies are small data files that are placed on your computer or mobile device when you visit a website. Cookies are widely used by website owners in order to make their websites work, or to work more efficiently, as well as to provide reporting information.
Cookies set by the website owner (in this case, Artem Yeromenko ) are called "first-party cookies." Cookies set by parties other than the website owner are called "third-party cookies." Third-party cookies enable third-party features or functionality to be provided on or through the website (e.g., advertising, interactive content, and analytics). The parties that set these third-party cookies can recognize your computer both when it visits the website in question and also when it visits certain other websites.
Why do we use cookies?
Lexicon does not set any cookies of its own. Everything we store is placed directly in your browser using localStorage and sessionStorage, and all of it is strictly necessary for the Website to work: keeping you signed in, holding your flashcards and study progress, and remembering your settings. We do not use this storage to track you, to profile you, or to target your interests, and we do not allow third parties to place tracking technologies on our Website for advertising or analytics. Everything we store is listed in the table below.
How can I control cookies?
Because everything Lexicon stores on your device is strictly necessary to provide the service you have requested, there is no consent banner and no preference centre — there are no optional categories to switch on or off. Lexicon shows a one-time notice explaining what is stored; dismissing that notice is an acknowledgement, not consent, and it grants us no additional permission.
If we ever introduce anything that is not strictly necessary — analytics, for example — we will ask for your consent before it loads, and you will be free to refuse without losing access to the Website. You remain in control at any time through your browser: you can block or delete this Website’s storage in your browser settings. If you do, you will be signed out, and any flashcards that have not yet been synced to your account may be lost.
Everything Lexicon stores on your device, and the purpose each entry serves, is listed in full in the table below:
Essential storage (strictly necessary):
These entries are strictly necessary to provide you with the services available through our Website and to use its features, such as access to secure areas. None of them can be switched off without breaking the service.| Name: | lexicon-cards-v1 |
|---|---|
| Purpose: | Stores the user's flashcard collection locally to enable fast access and synchronization with the server. |
| Provider: | lexiconcards.com |
| Service: | Lexicon |
| Type: | html_local_storage |
| Expires in: | Persistent |
| Name: | lexicon-local-updated-at |
|---|---|
| Purpose: | Stores the timestamp of the last successful server sync. Used to detect whether card data has changed on another device and avoid downloading unchanged data. |
| Provider: | lexiconcards.com |
| Service: | Lexicon View Service Privacy Policy |
| Type: | html_local_storage |
| Expires in: | Persistent |
| Name: | lexicon-sub-cache |
|---|---|
| Purpose: | Temporarily caches the user's subscription status (free/pro) for the duration of a browser session to reduce API calls to the server. |
| Provider: | lexiconcards.com |
| Service: | Lexicon |
| Type: | html_session_storage |
| Expires in: | Session |
| Name: | lexicon-usage-cache |
|---|---|
| Purpose: | Temporarily caches the user's card generation usage statistics to reduce API calls. Automatically invalidated after 60 seconds or when a new card is created. |
| Provider: | lexiconcards.com |
| Service: | Lexicon |
| Type: | html_session_storage |
| Expires in: | Session (60 seconds or until a card is generated) |
| Name: | lexicon-* (multiple keys) |
|---|---|
| Purpose: | Stores user interface preferences such as theme settings, font weight, filters, and folder structure to preserve the app experience across sessions. |
| Provider: | lexiconcards.com |
| Type: | html_local_storage |
| Expires in: | Persistent |
| Name: | lexicon-auth-token |
|---|---|
| Purpose: | Stores the user's authentication session to keep them logged in across page reloads. Without this entry, users would be signed out on every visit. |
| Provider: | lexiconcards.com |
| Service: | Supabase View Service Privacy Policy |
| Type: | html_local_storage |
| Expires in: | Persistent |
| Name: | lexicon-auth-token-code-verifier |
|---|---|
| Purpose: | Temporary cryptographic value generated during Google OAuth sign-in (PKCE flow). Deleted automatically when the tab is closed. Required for secure authentication. |
| Provider: | lexiconcards.com |
| Service: | Supabase View Service Privacy Policy |
| Type: | html_session_storage |
| Expires in: | Session |
| Name: | lexicon-session-active |
|---|---|
| Purpose: | Indicates that the user has an active session in the current browser tab. Used to manage UI state and prevent redundant authentication checks. |
| Provider: | lexiconcards.com |
| Type: | html_session_storage |
| Expires in: | Session |
| Name: | lexicon-cookie-notice |
|---|---|
| Purpose: | Records that the one-time notice about what Lexicon stores on your device has already been shown, so that it is not displayed again on every visit. Contains no identifier and is never sent to our servers. |
| Provider: | lexiconcards.com |
| Type: | html_local_storage |
| Expires in: | Persistent |
Payments. Lexicon does not embed Stripe on this Website and sets no payment cookies here. When you start a purchase you are redirected to Stripe’s own hosted checkout page, where Stripe acts as an independent controller and sets its own cookies under its own policy. You can read it at https://stripe.com/privacy.
How can I control cookies on my browser?
As the means by which you can refuse cookies through your web browser controls vary from browser to browser, you should visit your browser's help menu for more information. The following is information about how to manage cookies on the most popular browsers:
What about other tracking technologies, like web beacons?
No. We do not use web beacons, tracking pixels, clear gifs, device fingerprinting or any comparable technology — neither on this Website nor in any email we send you.
Do you serve targeted advertising?
No. We do not display advertising on this Website, and we do not allow third parties to place cookies or other technologies on it in order to build advertising profiles. We do not sell or share your personal information with advertisers.
How often will you update this Cookie Policy?
We may update this Cookie Policy from time to time in order to reflect, for example, changes to the cookies we use or for other operational, legal, or regulatory reasons. Please therefore revisit this Cookie Policy regularly to stay informed about our use of cookies and related technologies.
The date at the top of this Cookie Policy indicates when it was last updated.
Where can I get further information?
If you have any questions about our use of cookies or other technologies, pleasehello@lexiconcards.com or by post to
This Cookie Policy was created using Termly's Cookie Consent Manager