Shenzhen Yichenxing Technology Co., Ltd. fully respects your privacy. We have prepared this Ear Training Pro Privacy Statement (the “Statement”) so that you can understand how we collect, use, disclose, protect, store, and transfer your personal data. Please read this Statement carefully. If you have any questions, please contact us.

Collection and use of personal information

Personal information is data that can be used to uniquely identify or contact a person.

When you contact us or one of our affiliates, you may be asked to provide personal information. We and our affiliates may share this personal information with each other and use it in accordance with this privacy policy. We and our affiliates may also combine this information with other information to provide and improve our products, services, content, and advertising.

Below are examples of the types of personal information we may collect and how we use it.

What personal information we collect, and which permissions we use

When you use Ear Training Pro, we may collect certain information, including:

(1) Device MAC address: used to uniquely identify a user and prevent user information from being mixed up;

(2) Phone permission: used to send feedback to the platform from the feedback feature;

(3) System dialogs: used to ask you to confirm before a file is deleted;

(4) File read and write permission: used to store files you edit in features such as audio extraction and composition;

(5) Microphone permission: used by the tuner to capture audio and check whether the pitch is correct;

(6) Location information: used to show different knowledge and articles to users in different regions;

How we use your personal information

The personal information we collect lets us notify you of new product releases, software updates, and upcoming events. It also helps us improve our services, content, and advertising. If you do not want to be on our mailing list, you can opt out at any time by updating your settings.

We also use personal information to help us develop, deliver, and improve our products, services, content, and advertising.

From time to time we use your personal information to send important notices, such as messages about purchases and changes to our terms, conditions, and policies. Because this information is essential to your use of this app, you cannot opt out of these communications.

We also use personal information for internal purposes such as auditing, data analysis, and research, in order to improve this app’s products, services, and communication with customers.

If you take part in a sweepstakes, contest, or similar promotion, we use the information you provide to administer that activity.

Third-party SDKs we integrate

1. Pangle SDK

Purpose: ad delivery, ad measurement and attribution, and fraud prevention

Types of personal information: device information (such as device brand, model, operating system version, screen resolution, IP address, IMEI, Android ID, OAID, IDFA, and MAC address), app information (such as the list of installed package names, app package name, running process information, and version number), sensor information (such as the accelerometer and gyroscope), advertising data (such as ad impressions, clicks, conversions, and other interaction data), and SD card data (used to cache advertising information).

User obligations

1. You must not use the app to endanger national security or disclose state secrets. You must not infringe the lawful rights and interests of the state, society, collectives, or citizens. You must not use this service to create, copy, or distribute any of the following information:

(1) Content that incites resistance to or disruption of the Constitution, laws, or administrative regulations;

(2) Content that incites subversion of state power or the overthrow of the socialist system;

(3) Content that incites secession or undermines national unity;

(4) Content that incites ethnic hatred or discrimination, or undermines ethnic unity;

(5) Content that fabricates or distorts facts, spreads rumors, or disrupts public order;

(6) Content that promotes feudal superstition, obscenity, pornography, gambling, violence, murder, or terrorism, or that abets crime;

(7) Content that openly insults others, defames others by fabricating facts, or otherwise attacks others maliciously;

(8) Content that damages the reputation of state organs;

(9) Other content that violates the Constitution, laws, or administrative regulations;

(10) Commercial advertising.

Other

We may need to disclose your personal information as required by law, legal process, litigation, and/or requests from public authorities and government departments. We may also disclose information about you if we believe disclosure is necessary or appropriate for national security, law enforcement, or other matters of public importance.

We may disclose information about you if we determine that disclosure is reasonably necessary to enforce our terms and conditions or to protect our operations or users. In addition, in the event of a reorganization, merger, or sale, we may transfer all personal information we have collected to the relevant third party.

Protection of personal information

We take a range of precautions, including administrative, technical, and physical measures, to protect your personal information against loss, theft, and misuse, and against unauthorized access, disclosure, alteration, or destruction.

Integrity and retention of personal information

We will make it easy for you to keep your personal information accurate, complete, and up to date. We retain your personal information for as long as needed to fulfill the purposes described in this privacy policy, unless a longer retention period is required or permitted by law.

Children

We do not knowingly collect personal information from children under the age of 13. If we learn that we have collected personal information from a child under 13, we will take steps to delete that information as soon as possible.

Third-party websites and services

Our websites, products, applications, and services may contain links to third-party websites, products, and services. Our products and services may also use or offer products or services from third parties. Information collected by third parties, which may include location data or contact details, is governed by those third parties’ privacy practices. We encourage you to learn about those practices.

Our commitment to your privacy

To keep your personal information secure, we communicate our privacy and security guidelines to all users and strictly enforce our privacy protections.

Privacy questions

If you have any questions or concerns about our privacy policy or our data practices, please contact us.

We may update this privacy policy at any time. If we make a material change, we will post a notice and the updated privacy policy on our website.

This privacy policy was updated and takes effect on January 1, 2026.

You can reach the developer of this app by email at 2671157721@qq.com.