Privacy Policy (English)

For the Chrome extension TTPU English (dbjlefopijddcmlaanglecddjmmjcabn) and ttne.click. Updated: 8 Sep 2026.

TTPU English is a personal, non-commercial vocabulary learning tool. The extension has a single purpose: look up the meaning of text the user actively selects on a web page, and save those words to a personal vocabulary list for review.

1. What we collect

Data is sent only when the user actively asks — selecting text and clicking look up, typing in the search box, or clicking save. When text is selected, the selection and its surrounding sentence are read locally on the device to build the lookup button — nothing leaves the device until the user clicks. The extension does not scan pages or read anything beyond the selection.

• Selected or typed text — when the user requests a lookup. This is the content to translate.
• The sentence around the selection — to pick the correct sense of an ambiguous word.
• Page URL and page title — only when the user clicks save, to record where the word was encountered.
• Email, display name, password — at sign-in, to authenticate and attach the vocabulary list to the right person.
• Review history (which word, correct or not, response time) — when studying on the website, to schedule spaced repetition.
• Voice recordings — only when the user presses the microphone button for pronunciation scoring.

We do not read page content without a request, do not record browsing history, and do not collect contacts, location, financial data, health data, form inputs, or other sites' credentials or cookies. The extension does not track in-product usage.

2. How we process it

• Lookup: the selected text and its surrounding sentence go to our server, then to Google Gemini API to generate the meaning, pronunciation and examples. Results are cached so repeat lookups are instant.
• Saving: the word, meaning, example and source page are stored in the user's own list.
• Scheduling: correctness and response time feed the FSRS spaced-repetition algorithm. This is automated computation; no human reads it.
• Pronunciation: recordings go to Microsoft Azure Speech for scoring.

Data is never used for advertising profiles, marketing analytics, or training our own models.

3. Where we store it and for how long

• Our server (Vietnam): account, vocabulary, review history, voice recordings — kept until the user deletes them or requests account deletion.
• Server cache: lookup results — auto-deleted after 60 days.
• Website screen log (website only, not the extension) — auto-deleted after 90 days.
• On the user's machine (chrome.storage.local): session token, account name and email, server address — until sign-out or uninstall.

Passwords are stored hashed, never in plain text, and never on the user's machine. All traffic uses HTTPS.

4. Who we share it with

• Google Gemini API — the looked-up text and its sentence, with no name, email or other identifier attached.
• Microsoft Azure Speech — voice recordings the user deliberately submits, and text to read aloud.
• Google Text-to-Speech — text to read aloud, as a fallback voice.

No other sharing. We do not sell, rent, trade, or use user data for advertising. Disclosure occurs only if required by law.

5. Chrome Web Store Limited Use commitment

This extension's use and transfer of information received from Google APIs adheres to the Chrome Web Store User Data Policy, including the Limited Use requirements. Specifically:

• User data is used only to provide and improve the user-facing features of this extension (lookup, saving words, review, audio playback, pronunciation scoring).
• We do not transfer user data to third parties, other than the technical processors listed in section 4 and only as needed to operate those features, or where required by law.
• We do not use user data for advertising, ad measurement, or resale of any kind.
• We do not allow humans to read user data, except: with the user's explicit consent for a specific support request; where necessary for security purposes or to investigate abuse; or where required by law.

6. Permission justification

• storage — keep the session token and settings locally
• contextMenus — add a "Look up" item to the right-click menu
• alarms — refresh the due-card count shown on the toolbar icon
• scripting — insert the result card into the page when the user requests a lookup
• activeTab — read the user's current selection, only in the active tab and only on request
• Host access to the TTPU English server — send lookup and save requests to our own service

7. User rights, children, contact

Users can view, edit and delete any saved word at any time; request full account deletion (removed within 7 days); withdraw consent by signing out or uninstalling; and request an export of their vocabulary. The service is not directed at children under 13 and does not knowingly collect their data. Contact: casdayne26@gmail.com — we reply within 7 working days.

8. Changes

The date at the top changes with any update. Changes that widen data collection will be announced inside the extension before taking effect.

9. Data sources and attribution

This service uses open datasets. Their licences require the following attribution:

• CC-CEDICT — Chinese–English dictionary, used for instant lookup. CC BY-SA 4.0.
• Make Me a Hanzi (skishore) — stroke and radical data, used for stroke practice and handwriting recognition. Glyphs derive from Arphic fonts under the Arphic Public License; the accompanying code is MIT.
• hanzi-writer (chanind) — stroke rendering and grading library, MIT licence.

All of the above are hosted on our own server; using them sends no learner data anywhere.