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Privacy Policy

Applies to the Lexkite web app (lexkite.com), the Lexkite iOS/Android apps and the “Lexkite” browser extension. Effective date: October 17, 2026. See also our Terms of Use.

This policy was prepared from a template and describes how Lexkite currently works. It is not legal advice and does not replace review by a qualified lawyer.

Data controller: MODIAN LUXURY JEWELRY LLC, a Wyoming limited liability company, 30 N Gould St Ste R, Sheridan, WY 82801, USA (“Lexkite”, “we”). Contact: [email protected] or the contact form.

1. Summary

• You can use Lexkite without an account. Your learning data (saved words, context sentences, review progress, settings) is then stored only on your device.
• If you sign in with Google, a copy of your learning data and a basic account record (name, email address) are stored on our servers so they can sync between your devices.
• We measure how the product is used with our own statistics, without cookies. They use a random identifier stored on your device; if you sign in, this identifier is linked to your account (see section 2).
• Text you submit for AI feedback is processed by Google Gemini or Cloudflare Workers AI.
• We do not sell your personal data. Lexkite shows no advertising today; advertising is planned for the mobile apps and the website and will only be personalised with your consent (section 7).
• The browser extension does not collect your browsing history or page content; only the word or text you actively choose is sent to the lookup services listed below.
• You can export your data, delete it on your device and ask us to delete the server copy at any time: see How to delete your data.

2. Data we collect

We do not ask for and do not knowingly collect sensitive data (such as health, religion or financial information). Please do not include such information in texts you submit for AI feedback, problem reports or messages.

3. Why we use your data (purposes and legal bases)

• Providing the service (learning features, account, sync between devices, AI feedback you request, QR transfer, leaderboard you join, replying to your messages and reports): performance of our contract with you (GDPR Art. 6(1)(b)).
• Usage statistics, error reports and improving the product: our legitimate interest in understanding how Lexkite is used and fixing problems (Art. 6(1)(f)). You can object at any time (section 9).
• Security and abuse prevention (rate limits, spam checks, temporary blocks): our legitimate interest in keeping free features available to everyone (Art. 6(1)(f)).
• Optional features you switch on (for example “Advanced check” in the extension, on-device speech recognition, joining the leaderboard) and personalised advertising when it is introduced: your consent (Art. 6(1)(a)), which you can withdraw at any time.
• Legal obligations (for example answering lawful requests from authorities): Art. 6(1)(c).

We do not use your data for automated decisions that have legal or similarly significant effects on you. AI scores are practice feedback only.

4. Service providers and third-party services

We use the following providers. Some process data on our behalf (processors); others, such as Google Translate or speech recognition built into your browser, receive the request directly from your device and handle it under their own privacy policies.

Some features run entirely on your device and send nothing to us: Chrome’s built-in AI (used by the extension when available), text-to-speech in the mobile apps, local study reminders and on-device speech recognition (Whisper).

5. Cookies and local storage

Lexkite does not use cookies for statistics, tracking or advertising. Instead, the app stores data in your browser’s local storage and IndexedDB, in the app’s storage on your phone, or in the extension’s storage:

• Strictly necessary / functional: your learning data and settings, interface language (including a country code detected once from our own server to choose the default language), sign-in session (stored by Firebase Authentication), offline copies of the app and audio files (service worker cache), and the state of features you use.
• Statistics: the random visitor identifier and sampling settings used for our own usage statistics (section 2).
• Abuse prevention: a random device code sent with requests to AI feedback, Roleplay and QR transfer.

Third-party content may set its own cookies or storage: Cloudflare Turnstile when you open the contact form, YouTube when you play an embedded video and Google when you sign in. You can delete all Lexkite data stored in your browser at any time by clearing the site data for lexkite.com in your browser settings (this also deletes unsynced learning data).

When advertising is introduced, the ad providers will use cookies or the device advertising identifier; in the European Economic Area, the United Kingdom and Switzerland we will ask for your consent first through Google’s consent tool (section 7).

6. AI features

• AI feedback on essays and speaking, and Roleplay replies, are generated by Google Gemini or Cloudflare Workers AI (Meta Llama models). Requests are sent from our server; your name and email are not included.
• Free AI features have daily limits. To apply them, we count requests by account ID, random device code and hashed IP address.
• AI output can be wrong. It is practice feedback only and is not an official score (see our Terms of Use).
• In the app and the extension, you can optionally add your own Gemini API key; it is stored only on your device and requests are then sent directly from your device to Google using your key.

7. Advertising (planned)

Lexkite currently shows no ads and loads no advertising code. We plan to show ads in the iOS and Android apps (Google AdMob) and possibly on the website (Google AdSense) to keep Lexkite free. When ads are enabled:

• Ads will not appear during lessons, tests or reviews, and the browser extension will never show ads.
• Google may collect your device advertising identifier, IP address and device information to show, measure and limit ads. In the EEA, the UK and Switzerland, ads will be personalised only with your consent, collected through Google’s User Messaging Platform (UMP); otherwise only non-personalised ads will be shown. You can change your choice in the app’s privacy settings.
• On iOS, we will ask for permission before accessing the advertising identifier (App Tracking Transparency), where required.
• US state privacy laws (including the CCPA/CPRA): we do not sell your personal information for money. Once personalised ads are introduced, sharing data with ad providers may count as “sharing” for cross-context behavioural advertising; we will provide a “Do not sell or share my personal information” option in the app and honour Global Privacy Control signals on the web.
• We will update this policy before ads are enabled.

8. How long we keep data

9. Your rights and how to delete your data

Export: Settings → Export backup downloads all your learning data as a file.

Delete data on your device: Settings → Delete all study data deletes your flashcards, progress, XP and statistics on that device. You can also clear the site data for lexkite.com in your browser, uninstall the mobile app, or remove the extension (this deletes the data stored in it).

Delete your account and server data: in the web app or the mobile app, open Settings → account card → Delete account (or go to lexkite.com/app/#/settings?delete=account), sign in again to confirm, and your synced learning data, account record, the link between your visitor identifier and your account, your leaderboard data and your sign-in record in Firebase Authentication are deleted immediately; problem reports you sent are kept without your email or account ID. You can also email [email protected] with the subject “Delete my Lexkite data” from the email address you sign in with, or use the contact form with that address. We will delete your synced learning data, account record, the link between your visitor identifier and your account, your leaderboard data, your sign-in record in Firebase Authentication and, on request, your problem reports and messages, within 30 days, and confirm by email. Your Google account itself is not affected. Anonymous statistics that are not linked to your account may be kept for the periods in section 8.

Stop syncing: sign out at any time; your data then stays only on your device. You can also remove Lexkite’s access to your Google account at myaccount.google.com/permissions.

Your rights: depending on where you live (for example under the GDPR, UK GDPR, the CCPA/CPRA or Vietnam’s personal data protection law), you may have the right to access, correct, delete or receive a copy of your personal data, to restrict or object to its processing (including our usage statistics), to withdraw consent, and to opt out of the sale or sharing of personal information. We will not treat you differently for using these rights. Contact us to exercise them; we reply within 30 days and may need to verify your identity. You can also complain to your local data protection authority.

10. Children

Lexkite is not directed to children under 13, and we do not knowingly collect personal data from children under 13. In the EEA and the UK, users under 16 (or the lower age set by their country) should sign in only with the consent of a parent or guardian. If you believe a child has given us personal data, contact us and we will delete it. When advertising is introduced, we will not show personalised ads to users we know are under the applicable age.

11. International transfers

Lexkite is operated from the United States and uses providers (Cloudflare, Google, GitHub and others) that process data in the United States and other countries. Cloudflare serves requests from data centres around the world. Where data from the EEA, the UK or Switzerland is transferred, we rely on the safeguards offered by these providers, such as the EU Standard Contractual Clauses or the EU–US Data Privacy Framework.

12. Security

All data is sent over encrypted connections (HTTPS). Each account can read and write only its own synced data, verified with Google-signed sign-in tokens. IP addresses used for abuse prevention are stored only as one-way hashes. QR transfers are encrypted on your device. Access to our systems is limited to authorised administrators, and administrative actions are logged. No system is perfectly secure; if a breach affects your personal data, we will notify you and the authorities as required by law.

13. Browser extension

• The extension does not collect or send your browsing history or page content. Only the word or text you actively double-click, select or tap is sent to the lookup services in section 4. Optional on-page features (highlighting words you have saved, underlining academic words) run entirely on your device.
• Writing check (off by default). If you turn on “Writing check”, the text you type in a text box is checked for English mistakes on your device (Lexkite rules and, if your Chrome has it, Chrome’s built-in AI proofreader). Only if you also turn on “Advanced check” is the text of the box you are typing in sent to LanguageTool to find more mistakes (at most 20 checks per minute); it is not sent to us. Password, email, number and payment-card fields, banking and payment sites, and sites you turn it off for are never checked. Mistakes you repeat are saved only on your device in your Mistake notebook (a short sentence excerpt), and words you often misspell may be added to your flashcards (the word only).
• Deep explanation (AI). Only when you tap “🤖 Deep explanation” in the translation card, the English text you selected and the sentence around it are explained by Chrome’s built-in AI on your device if it is already available. Otherwise they are sent to our server (lexkite.com/api/ai) with a random device identifier used only for the daily free limit, and processed by Google Gemini or Cloudflare Workers AI as described in section 2. If you added your own Gemini key, it is used only when our free AI cannot answer. Nothing is sent until you tap the button.
• Once a day the extension sends us the usage counts described in section 2. These counts never include the words you look up, page addresses, your name or email. When you uninstall the extension, a page on lexkite.com opens where you can optionally tell us why.
• Permissions: access to websites (http/https) to show the lookup card, translate selected text, look up words in YouTube subtitles and run the optional on-page features above; storage to keep your vocabulary and progress on your device; alarms and notifications for study reminders; contextMenus for the right-click “Look up / Translate selection” item; scripting to enable lookup in tabs that were already open when you installed the extension and to read the subtitle list of the YouTube video you are watching; search so the search box on the Lexkite new tab page sends your query to your default search engine. The new tab page can be turned off in the extension settings.
• Limited Use: Lexkite’s use of information received through the extension complies with the Chrome Web Store User Data Policy, including the Limited Use requirements. We use this data only to provide and improve the extension’s single purpose (learning English vocabulary while you browse); we do not sell it, do not use or transfer it for advertising or to determine creditworthiness, and do not allow humans to read it except with your consent, for security or legal reasons, or in aggregated form. Information received from Google sign-in is used only to sign you in and sync your data, in line with the Google API Services User Data Policy.

14. Changes to this policy

If we change this policy, we will update the effective date at the top of this page. For important changes, such as enabling advertising or a new type of data processing, we will update this policy before the change takes effect and, where appropriate, inform you in the app.

15. Contact

For any question or request about your personal data, contact [email protected] or use the contact form. We reply within 30 days.

MODIAN LUXURY JEWELRY LLC
30 N Gould St Ste R, Sheridan, WY 82801, USA

16. Open data credits

• Core word list: NGSL 1.2 – New General Service List © Browne, C., Culligan, B. & Phillips, J., licensed under CC BY-SA 4.0 (newgeneralservicelist.com). Lexkite’s translations are released under the same licence.
• Illustrations: Creative Commons and public-domain images via Openverse; the author and licence are shown under the ⓘ button on each image.
• Academic and business word lists: NAWL 1.2 and BSL 1.20 © Browne, Culligan & Phillips, CC BY-SA 4.0; definitions and examples partly from Wiktionary via the Free Dictionary API (CC BY-SA).
• Bilingual example sentences: Tatoeba (CC BY 2.0 FR).

“IELTS” is a trademark of the British Council, IDP: IELTS Australia and Cambridge University Press & Assessment; “TOEIC” and “TOEFL” are trademarks of ETS. Lexkite is an independent product and is not affiliated with or endorsed by these organisations.