Legal
Privacy Policy
This policy explains how Hunan Tianlong Brothers Culture Communication Co., Ltd. (“we”, “us”, “our”) handles personal information in connection with the Tinxie website at hntlxd.cn and the Tinxie app (together, the “Service”).
In short: we collect the account and practice information needed to run Tinxie, process purchases through Google Play or the App Store, and keep the Service secure. Microphone input is processed on your device and is not uploaded. Photos and handwritten notes stay on your device. We do not sell personal information, and the app does not include advertising or behavioural-tracking SDKs.
1. Who is responsible
The data controller for the Service is:
Hunan Tianlong Brothers Culture Communication Co., Ltd.
湖南天龙兄弟文化传播有限公司
Room 1117-268, Northwest Corner of the Intersection of Furong Road and Chengnan Road, Chengnan Road Subdistrict, Tianxin District, Changsha, Hunan, China
Email: support@hntlxd.cn
2. Information we collect
2.1 Account information
- Email address and, if you choose to add it, phone number.
- Account identifier, login status, and authentication metadata.
- Verification codes sent by email or SMS through our service providers.
2.2 Device and security information
- A device public key and fingerprint created on your device to keep your account and licence bound to it.
- Device model, operating system, app version, and language settings.
- IP address, request time, and technical log data processed by our hosting and security providers.
2.3 Practice information
- Exercise type, difficulty, answers, scores, timestamps, and practice history.
- App settings, appearance choice, and progress records.
2.4 Purchases and entitlements
- The store (Google Play or the App Store), product identifier, transaction identifier, purchase date, and entitlement status.
- We do not receive or store your full payment card number. Payment is processed by the store.
2.5 Microphone, photos, and handwriting
- Microphone: where singing or pitch practice is available, audio is processed on your device to estimate pitch. We do not upload or store the recording.
- Photos and handwriting: images you choose and handwritten answers are stored locally on your device. We do not upload them.
2.6 Website and support
- Our website is a static site. We do not use advertising cookies or analytics scripts.
- Our hosting and security provider processes basic request data (such as IP address, user agent, and time) to deliver the site and protect it from abuse.
- If you email us, we receive your email address, message, and any attachments you send.
3. How we use information
- To create and secure your account, and to verify your email or phone number.
- To provide practice exercises, play audio, save your progress, and restore purchases.
- To enforce device and licence limits, prevent abuse, and investigate security incidents.
- To respond to support, privacy, and business enquiries.
- To comply with legal obligations, tax and accounting rules, and store requirements.
- To improve the Service using aggregated, non-identifying information where permitted by law.
Where the GDPR or UK GDPR applies, we rely on: performance of a contract (providing the Service), our legitimate interests (security, fraud prevention, and improving the Service), consent (where required, for example for optional microphone access), and legal obligations.
4. Sharing
We do not sell personal information. We share information only with:
- Hosting and infrastructure providers that run our servers, storage, and website delivery.
- Email and SMS providers that deliver verification codes and support messages.
- Google Play and the App Store, which process purchases, subscriptions, refunds, and related fraud checks under their own policies.
- Professional advisers and authorities where required by law, or to protect our rights, users, or the public.
Service providers are required to process information only for the purposes we specify and to apply appropriate safeguards.
5. Where information is processed
Our servers and service providers may process information in China and in other countries where they operate. If you access the Service from outside China, your information may be transferred to and processed in China. Where required, we rely on appropriate safeguards for cross-border transfers. You may contact us for more information about the safeguards used.
6. Retention
- Account and practice data: kept until you delete your account, unless a longer period is required by law.
- Purchase and tax records: kept for the period required by applicable tax, accounting, and consumer-protection laws.
- Security logs: kept for a limited period (normally up to 90 days) unless needed to investigate an incident.
- Support correspondence: kept for up to two years after the matter is closed.
7. Security
We use HTTPS, encryption in transit, access controls, least-privilege administration, and device-bound keys to protect the Service. No method of transmission or storage is completely secure; please use a strong, unique password and keep your device and email account secure.
8. Your rights
Depending on where you live, you may have the right to:
- Access the personal information we hold about you.
- Correct inaccurate information.
- Delete your account and associated information.
- Restrict or object to certain processing.
- Receive a portable copy of information you provided.
- Withdraw consent where processing is based on consent.
- Lodge a complaint with your local data-protection authority.
To exercise these rights, email support@hntlxd.cn. We may need to verify your identity before acting. We will respond within the time required by applicable law.
9. Deleting your account
You can request deletion from inside the app (Settings → Account → Delete account) or through our account deletion page. We will process verified requests within 15 business days. We may retain purchase, tax, and security records where required by law; those records are restricted to the purpose that requires them.
10. Children
Tinxie is intended for music learners aged 13 and over. It is not directed to children under 13 (or under 16 in the EEA/UK, where applicable). If you are a parent or guardian and believe a child has provided personal information without appropriate consent, contact us and we will take appropriate steps.
11. Cookies and tracking
The website does not use advertising cookies or analytics scripts. The app does not include advertising SDKs or cross-app behavioural tracking. Our hosting provider may process technical request data to deliver content and protect the Service.
12. Changes
We may update this policy as the Service develops. We will post the new version here and update the effective date. If a change is material, we will provide additional notice where required.
13. Contact
Questions about this policy or our handling of personal information:
Hunan Tianlong Brothers Culture Communication Co., Ltd.
Email: support@hntlxd.cn
Phone: +86 186 7317 8621
Address: Room 1117-268, Northwest Corner of the Intersection of Furong Road and Chengnan Road, Chengnan Road Subdistrict, Tianxin District, Changsha, Hunan, China