Privacy Policy

This project respects and protects the personal privacy rights of all service users.

In order to provide you with accurate and personalized services, we will use and disclose your personal information in accordance with this privacy policy, treating it with a high degree of diligence and prudence. Unless otherwise specified herein, we will not disclose or provide this information to third parties without your prior permission.

This privacy policy covers:

What information the platform collects and why
How the platform uses that information
Your rights to control personal information
How this privacy policy is updated
Protection of children’s personal information
How to contact us

1. Information Types and Purpose

The following outlines what information is collected and what is not.

The platform obtains your phone number, nickname, MAC address, and Android ID to identify you.

1.2 Access to Photos, Media, and Files on Your Device

During use, this software needs to download media and data files from the network and store them locally. If this permission is denied, media files cannot be downloaded or played.

1.3 Location Permission

Low-power Bluetooth MIDI connection technology relies on this permission for directional radio-wave transmission. This is a required permission for Bluetooth connectivity.

1.4 Log Information

While you use this software, it moderately records your usage (such as practice session scores) to track your progress. All records are anonymized.

1.5 Network Access Permission

This software interacts with servers to retrieve data, so network access permission is required for operation.

1.6 Application List Access

During the update process, this software may access your application list to obtain information about itself.

1.7 No Collection of Children’s Personal Information

This project does not collect, store, or use any personal information of children. Minors must use this software under adult supervision (see Section 5).

2. Information Usage

We will not provide, sell, rent, share, or trade your personal information with any unrelated third party without your prior permission, unless such a third party jointly provides services with us, and after those services end, they will be prohibited from accessing any previously accessible data.

We do not allow any third party to collect, edit, sell, or freely distribute your personal information. Any platform user found doing so will have their service agreement immediately terminated.

We may use your personal information to send you content you may find interesting, including product and service information, or to share information with partners so they may send relevant communications — the latter requires your prior consent.

2.1 Information Disclosure

We may disclose all or part of your personal information in the following circumstances:

With your prior consent, to third parties
When necessary to provide products or services you have requested
As required by law or by administrative or judicial authorities
If you violate Chinese laws, regulations, or our service agreements
If you are an intellectual property complainant and the respondent requests disclosure to resolve a rights dispute
As otherwise deemed appropriate under applicable laws, regulations, or site policies

2.2 Scope of Application

This privacy policy applies to:

Personal registration information you provide when creating an account
Information automatically received from your browser and device when you use our services, including but not limited to IP address, browser type, language, access dates and times, hardware/software characteristics, and page visit records
User personal data obtained from business partners through lawful means

The following information is not subject to this privacy policy:

Keywords you enter when using our search services
Information published by you on this platform, including activity participation, transaction records, and reviews
Violations of laws or project rules and any measures taken against you

2.3 Information Storage and Exchange

Information we collect will be stored on servers belonging to our company and/or affiliates. This information may be transmitted to, and accessed, stored, and displayed in countries or regions outside where it was collected.

2.4 Information Security

This project does not require a password to log in, but you may bind a phone number to record usage. Please keep your phone number and credentials safe. We use mechanisms such as SMS authentication to protect your account from misuse.

2.5 Alibaba AliSDK

This project uses Alibaba SDK to provide Alipay payment functionality.

3. Your Rights to Control Personal Information

We take your personal information seriously and strive to protect your rights to access, correct, delete, and withdraw consent.

3.1 Accessing and Correcting Your Personal Information

You have the right to access and correct your personal information at any time, subject to applicable law, including:

Access or modify your nickname via [User → Account Settings]
Access or modify your email via [User → Account Settings]

3.2 Deleting Your Personal Information

You may request deletion of your personal information in the following situations:

Our processing of personal information violates laws or regulations
We collected or used your personal information without your consent
Our processing violates an agreement made with you
We terminate our services and operations

If we respond to your deletion request, we will also notify entities that received your information from us and require them to delete it, unless otherwise provided by law or they hold your independent authorization.

You may change or revoke your authorization for us to collect personal information by deleting data, disabling device features, or adjusting privacy settings in the software.

Please note that some personal information is required for core functions. After withdrawing consent, we will no longer be able to provide the corresponding services or process the related personal information.

3.4 Responding to Your Requests

For security purposes, we may require identity verification before processing your request. We will respond within 30 days in principle. Reasonable requests are handled at no charge; however, we reserve the right to charge for requests that are repetitive or exceed reasonable limits.

We may be unable to respond to your request in the following circumstances:

Directly related to national security or national defense
Directly related to public safety, public health, or major public interests
Directly related to criminal investigation, prosecution, trial, or enforcement
Sufficient evidence indicates subjective malice or abuse of rights
Responding would cause serious harm to the legitimate rights of others
Involving trade secrets

4. Privacy Policy Updates

We may update this privacy policy from time to time. Your agreement to our service terms constitutes acceptance of this policy in full. This privacy policy is an integral part of our service agreement.

5. Protection of Children’s Personal Information

We are committed to not collecting, storing, or using any personal information of children. We take reasonable and necessary measures — including physical protection, security technology, and management systems — to reduce the risk of misuse, unauthorized access, disclosure, and modification.

If we discover a potential data breach, we will immediately activate emergency procedures and take remedial action. In cases of serious impact, we will report to relevant authorities and notify affected children and their guardians.

6. How to Contact Us

If you have any questions or concerns about this privacy policy, please contact us:

Website: www.dtx2020.com
WeChat: chadwi
Email: chadwi@qq.com

We will respond within 3 business days.