Privacy Policy — "Kaita" (Кайта · 凯塔)
Last updated: 7 November 2026
Applies to: the "Kaita" browser extension (Russian: «Кайта», Chinese: 凯塔) for Google Chrome and Microsoft Edge, including beta versions (the "Extension").
Who we are: Begali Khudaiberdiev (Худайбердиев Бегали), an individual based in Bishkek, Kyrgyz Republic ("we", "us").
Privacy contact: [email protected]
1. Summary
- Speech recognition with the built-in "Кайта · Whisper" engine runs on your device. Your voice is not sent to our servers: the Extension has no servers of its own.
- All your data (phrases, video history, attempts, progress, settings) is stored locally in your browser (
chrome.storage.local). We cannot access it. - No accounts, no ads, no analytics, no tracking. We do not sell or share data.
- Exception: if in Chrome the recognition setting is "Browser" or "Auto" (in Chrome, "Auto" uses the browser recogniser), your recording is processed by the browser's built-in speech service, which is operated by Google. See section 4.
2. What data is processed and where
| Data | Purpose | Where it is stored / sent |
|---|---|---|
| Microphone audio (only while a practice recording or the simultaneous mode is running) | Recognise what you said and compare it with the phrase | Processed in browser memory on your device (Whisper engine). Kept in memory only so you can replay it; discarded on the next attempt or when the page closes. Not saved to disk or sent to our servers. Chrome exception: section 4. |
| Recognised text and scores (accuracy, tone/pronunciation issues) | Show results, statistics and adaptive tips | chrome.storage.local on your device |
| Saved phrases: phrase and translation text, YouTube video ID and title, timestamps, your notes and difficulty ratings | Your review list | chrome.storage.local |
| Video history (up to the last 50 videos opened with the panel, plus pinned ones): video ID and title, where you stopped, a copy of the captions, a small thumbnail frame | Resume where you left off and review phrases without reloading | chrome.storage.local; deleted from the Library or together with the Extension |
| Simultaneous sessions, statistics, profile of frequent mistakes | Progress, streaks, personal tips | chrome.storage.local |
| Settings (language, mode, pinyin, recognition engine, etc.) | Operating the Extension | chrome.storage.local |
| Whisper speech model (~80 MB of model files, not your data) | Offline recognition | Downloaded once from Hugging Face (huggingface.co) and cached by the Extension |
We do not collect: name, email, phone, payment details, browsing history beyond the YouTube pages you open with the panel, content of other websites, location, or advertising identifiers.
3. YouTube
The Extension runs only on www.youtube.com pages. To show phrases, it reads the captions YouTube provides to the player on the page you opened. The Library page shows video thumbnails from i.ytimg.com (YouTube's image server). These requests are made by your browser, as during normal YouTube viewing, and are subject to Google/YouTube's terms and privacy policy. We do not receive this data. The Extension does not download video or audio and does not block ads.
4. Third-party services
- Hugging Face (model download). When the model files are downloaded, Hugging Face receives your IP address and technical request data (browser, time), like any website. Your voice and texts are not sent there.
- Browser built-in speech recognition (Chrome, "Browser" or "Auto" setting). This mechanism (Web Speech API) is server-based: audio is sent to Google's speech recognition service and handled under Google's policies. To avoid this, choose "Recognition: Кайта · Whisper" in the panel settings, and audio stays on your device. In Microsoft Edge the Extension always uses Whisper.
- "AI analysis" in the Library only builds a text prompt and copies it to your clipboard; the button opens an AI chat website (claude.ai). You decide what to paste and send; the Extension itself sends nothing.
- Google/YouTube — see section 3.
- Extension stores (Chrome Web Store, Microsoft Edge Add-ons) may collect installation data under their own policies. We receive only aggregated statistics from them (installs, ratings).
5. Browser permissions
- Microphone: the browser asks permission for
www.youtube.comon your first recording. You can revoke it in the browser's site settings. - storage, unlimitedStorage: keeps your data (including video history with captions) locally, without the 10 MB quota.
- Access to www.youtube.com: runs the panel on video pages.
- offscreen: runs Whisper speech recognition in a background document of the Extension.
6. Retention, export and deletion
- Data is kept until you delete it. You can delete individual phrases and videos in the Library, or delete everything by removing the Extension: the browser erases
chrome.storageand the model cache. - "Export" saves your data to a JSON or CSV file on your computer. You control that file.
- Because data never leaves your device, we cannot view, recover or delete it for you.
7. Future features (only with your consent)
We may add an optional server-based AI analysis (for example, detailed feedback on your translation). If we do:
- it will be off by default and enabled only after separate, explicit consent;
- before you enable it, we will show what is sent, to whom (the AI provider and country of processing), and for how long it is kept;
- you will be able to withdraw consent at any time;
- we will update this Policy and notify you in the Extension before launching this feature, accounts or a paid subscription.
8. Legal bases and your rights
- We process the minimum data needed to run the Extension. Processing happens on your device when you act (pressing record, saving a phrase).
- Depending on your country (GDPR in the EU, personal data law of the Kyrgyz Republic, Russian Federal Law 152-FZ, China's PIPL, etc.), you have rights of access, rectification, erasure, restriction, portability and withdrawal of consent. You exercise most of them yourself, because the data stays with you. For anything else, write to [email protected]. You may also complain to your local data protection authority.
9. Children
The Extension is not intended for children under 13 (or the age set by your local law) without consent from a parent or guardian. We do not knowingly collect children's data.
10. Security
Data is stored in the Extension's isolated storage in your browser. Model files are downloaded over HTTPS. All executable code (JavaScript and WebAssembly) is included in the Extension package; no remotely hosted code is executed. Please protect access to your device and browser profile.
11. Limited Use (Chrome Web Store)
The use of information received from Chrome APIs adheres to the Chrome Web Store User Data Policy, including the Limited Use requirements. Data is used only for the Extension's single purpose (shadowing and interpreting practice on YouTube videos). It is not sold, not used for advertising, and not transferred to third parties except as described above.
12. Changes
We post new versions on this page and update the date above. We announce material changes (new data types, server-side processing) in the Extension before they take effect and ask for consent where required.
13. Contact
Begali Khudaiberdiev, Bishkek, Kyrgyz Republic · [email protected]