LingoFlashLingoFlash

Privacy Policy

Effective October 10, 2026

LingoFlash (lingoflash.ai, the “Service”) is operated by Vansor Technology Limited (“we”, “us”). This policy explains what information we collect when you use the Service, how we use it, and the rights you have.

1. What we collect

  • Account information: your name, email address and profile picture if you sign in with Google; your email address and an encrypted password if you sign up by email.
  • Learning data: links to videos you add and their subtitles, AI recognition and translation results, scene descriptions you enter and the expressions generated, saved words, your progress and review history, and your language settings.
  • Voice data: when you use AI pronunciation scoring, the one sentence you recorded is sent for scoring. We do not keep that audio on our servers after scoring. Your recordings themselves (for playback comparison) are stored only in your browser on your device.
  • Usage records: how often and when you use each feature (to track free allowances, credits and our costs), and your study days.
  • Payment information: subscriptions and credit purchases are handled by Stripe. We keep only your subscription status, credit balance and transaction records, and never receive or store your card number.
  • Device and access information: browser type, time zone (to count study days in your local time), IP addresses in server logs, and the browsing and interaction data collected by the analytics tools described below.

2. How we use it

  • To provide the Service: subtitles and translation, pronunciation scoring, word lookups and AI explanations, read-aloud and review.
  • To manage your account, free allowances, subscription and credits.
  • To answer your questions and send important notices.
  • To keep the Service secure, prevent abuse and fix problems.
  • To understand how the Service is used and improve it.

We do not sell your personal information, and we do not use your learning data for advertising.

3. Service providers

We share the data needed to run the Service with the following kinds of providers, which may only use it on our instructions:

  • Sign-in: Google (if you sign in with Google).
  • Payments: Stripe (subscriptions and credit purchases).
  • AI service providers: process the text, video audio and scoring recordings you send, to generate expressions, recognise subtitles, translate, explain, score and read aloud.
  • Caption and media providers: fetch the public captions of videos you add, and the video file when you choose to download it.
  • Cloud hosting and storage: run the website and store the database, video files and audio cache.
  • Analytics: Google Analytics and Microsoft Clarity, to understand usage and improve the Service.

Beyond this, we disclose information only when required by law or to protect the safety of users and the public.

4. International transfers

We are a Hong Kong company, and our service providers' servers are mainly in the United States and other countries. Your data may therefore be stored and processed outside the country where you live. We work only with providers that commit, through their policies and contracts, to protecting personal data. Contact us if you would like more detail.

5. Cookies, analytics and local storage

  • We use essential cookies to keep you signed in and to remember your language and time zone.
  • Google Analytics and Microsoft Clarity use cookies and similar technologies to collect page views and on-page interactions (such as clicks and scrolling) for usage analysis. You can turn them off in your browser settings or with the opt-out tools these companies provide.
  • Player settings and your recordings are kept in your browser's local storage.
  • We do not currently use third-party advertising cookies.

6. Security

  • Connections are encrypted (HTTPS) and passwords are stored encrypted.
  • Access to personal data is limited to the people and permissions that need it.
  • We choose service providers that maintain security safeguards.

7. Retention and deletion

  • You can delete videos you added, their files and anything you saved in the app at any time.
  • To delete your account and all its data, email [email protected]. We will do so within 30 days.
  • Transaction records may be kept longer where accounting or legal rules require it.

8. Your rights

You can ask to access, correct, export or delete your personal data, to stop or restrict its use or its sharing with third parties, and you can withdraw consent. Email [email protected]from the address you sign in with. We will confirm it's you and respond without undue delay, free of charge. You may also have the right to complain to your local data protection authority.

9. Children

The Service is not intended for children under 13. If you believe we have collected information from a child under 13, contact us and we will delete it.

10. Changes to this policy

If we make significant changes to this policy, we will announce them in the Service in advance.

11. Contact

Vansor Technology Limited
Email: [email protected]