Legal
Privacy Policy
This Privacy Policy explains how StarLearn collects, uses, stores, shares and protects your personal information when you use our mobile app and related services. Please read it before using the Service.
Information we collect
We collect only what we need to run the Service. It falls into four categories:
- Account information: the email address, display name and avatar you provide when you sign up, plus the unique user ID that identifies your account.
- Learning progress and saved items: your study history, practice results, saved lessons and content, and your in-app preferences.
- Device and crash logs: device model, operating system version, app version and locale, plus diagnostic logs (including stack traces and a device identifier) captured when the app crashes or misbehaves.
- Payment information: your subscription orders and subscription status. We never handle your full card details — payments run through Google Play Billing or Apple App Store In-App Purchase, and we do not collect or store your card number, security code or any other complete payment credential.
How we use your information
We use this information to deliver the Service, keep it secure and make it better: creating and managing your account, syncing your study progress and saved items, answering support requests, diagnosing faults, fixing crashes and protecting the Service. We also use it where the law requires it, or where you have asked us to.
We do not use your personal information for targeted advertising, and we do not sell it.
Third-party services
The Service relies on the following third parties, which process data only within the scope we authorise:
- Sentry (Functional Software, Inc.) — crash and error reporting. When the app crashes, diagnostic logs containing device and app state are sent to Sentry so we can find and fix the problem.
- Google Play Billing (Google LLC) — subscription and payment processing on Android.
- Apple App Store In-App Purchase (Apple Inc.) — subscription and payment processing on iOS.
- Cloud hosting — our backend API and database run on infrastructure provided by a third-party cloud provider, which handles accounts, learning data and content delivery.
Where data is stored and how long we keep it
Your information is stored on servers operated by us and by the providers above. We protect it with encryption in transit, access controls and least-privilege policies.
While your account is active we keep your account information and learning data. After you delete your account we retain backups for 30 days, then permanently delete or anonymise them. Where the law requires a longer retention period, we follow it.
Your rights
You have the following rights over your personal information. Exercise them from inside the app or by emailing support@starresearch.cn:
- Access — see the personal information we hold about you.
- Correction — fix information that is inaccurate or incomplete.
- Deletion — delete your account and the personal data linked to it.
- Portability — receive a copy of your personal data in a structured, commonly used, machine-readable format.
Children's privacy
The Service is intended for users aged 13 and over and is not directed at children under 13. We do not knowingly collect personal information from children under 13.
If you are a parent or guardian and believe a child in your care has given us personal information without your consent, contact us at support@starresearch.cn and we will delete it promptly.
Cookies and local storage
Our website uses only the technical storage needed to keep it working and secure. We use no third-party advertising or tracking cookies.
The mobile app stores sign-in credentials, preferences and cached content on your device so that you can get back in quickly. Clearing the app's data in your device settings also clears that local cache.
International data transfers
The Service is operated from mainland China and offered worldwide, so your personal information may be transferred and processed both inside and outside mainland China, including in the jurisdictions where the third-party providers above operate.
We take the steps required by applicable law to make sure personal information keeps a level of protection comparable to this Policy wherever it is transferred.
Security
We protect your personal information with transport encryption, access controls, log auditing and data minimisation.
Even so, no method of transmission or electronic storage is completely secure. If a security incident occurs, we will notify you and the relevant regulators as applicable law requires.
Changes to this Policy
We may update this Policy from time to time. We will give you advance notice of material changes through an in-app notice, an announcement on our website, or email, and we will update the “Last updated” date at the top of the page.
If you keep using the Service after a change takes effect, you accept the updated Policy. If you do not agree, please stop using the Service and delete your account.
Contact us
Questions or complaints about this Policy, your personal information, or exercising your rights? Email support@starresearch.cn.
Operator: Nanjing StarResearch Intelligent Technology Co., Ltd. We handle requests within a reasonable time.