Effective date: 22 July 2026
Last updated: 30 July 2026
This list supplements the Yisi Privacy Policy. It explains the main product scenarios in which Yisi may process personal data, why the information is needed, and what happens if you do not provide it.
| Business scenario | Personal information | Purpose | Is it necessary? | Retention |
|---|---|---|---|---|
| Account and support | Contact details and account identifiers that you choose to provide | Account support, privacy requests, service communications, and security | Only when you use the relevant account or support feature | While needed for the account or request, plus lawful record-keeping periods |
| Student profile | Subject, examination level, study goals, and other profile information you choose to provide | Personalise learning content and progress insights | Optional unless a feature requires it | Until you delete it, close the account, or it is no longer needed |
| Learning records | Questions, answers, notes, tags, wrong-question records, study plans, practice history, and progress data | Provide learning organisation, review, analytics, and progress tracking | Yes for the feature you choose to use | Until deletion, account closure, or the end of the relevant service need |
| Photo and document features | Question images, completed papers, screenshots, documents, and extracted text or answers | Recognise questions, match question-bank content, generate explanations, create papers, or save wrong questions | Only when you actively use the related feature | For the time needed to provide the feature and any longer period required by law |
| AI and learning analysis | Submitted learning content, question metadata, answer results, and analysis outputs | Generate or display explanations, identify knowledge points, and produce learning reports | Yes for the AI or analysis feature you request | For the time needed to provide and improve the requested service, subject to lawful retention |
| App operation and diagnostics | App version, operating system, device model, IP address, timestamps, crash information, and service logs | Operate, secure, troubleshoot, and improve Yisi | Some technical data is necessary for the service to function | For as long as reasonably needed for security, diagnostics, and service improvement |
| Customer service | Messages, feedback, screenshots, and files you choose to send | Respond to questions, investigate issues, and improve support | Only when you contact us | For the time needed to resolve the request and meet lawful obligations |
1. Sensitive information and device permissions
Learning records, examination results, academic performance, uploaded documents, and information about a child may be sensitive in context. We use these categories only for the purposes described in the Privacy Policy and ask you to provide only what is needed for the feature.
If a feature needs access to a camera, photo library, microphone, or files, the app will request the relevant permission. You may refuse the permission, but the related feature may not work.
2. Refusing optional information
You may refuse optional profile information and optional device permissions. Refusing optional information will not affect unrelated features. If you do not provide information that is necessary for a specific feature, Yisi may not be able to provide that feature.
3. Storage and deletion
We aim to keep personal data accurate and not retain it longer than necessary. You may ask to access, correct, or delete your personal data by contacting us by telephone at +86 186 1298 8016.
For the full explanation of data practices, see the Yisi Privacy Policy.