Wonder Piano is a piano practice and learning support tool provided by HONG KONG MANGO FUTURE TECHNOLOGY LIMITED (“we,” “us,” or “our”). This Privacy Policy explains how we collect, use, disclose, store, and protect information relating to Wonder Piano users, and how users and parents or legal guardians may exercise privacy rights.
Wonder Piano is not offered to children under 13 or to persons below the minimum digital consent age required by the laws of your location. We do not knowingly collect, use, or request personal information from such persons. For details, please see the “Age Requirements and Children’s Privacy” section of this Policy.
We collect information only to the extent necessary to provide, maintain, improve, and protect the Services.
During your use of the Wonder Piano Services, Wonder Piano will collect information that you actively provide when using the Services or that is generated from your use of the Services in the following ways, in order to provide the Services to you, optimize our Services, and protect your account security:
Registration or login is required to use the Services. We support phone number, email, Google login, and Apple login. When you register, log in, purchase a membership, contact customer support, or submit a request, we may collect the following information and use it to protect your account security:
account ID, nickname, and profile picture;
email address, phone number, or third-party login identifier bound to the account;
country/region and language preference;
feedback communication records and request content;
information actively provided by the user or generated through use of the Services.
This type of information is collected to create and secure your account, provide the Services, and comply with applicable laws. If you do not provide this information, you may be unable to use our Services normally.
To ensure service operation, security, and compatibility, we may collect:
device model, operating system version, and App version;
device identifiers or serial number, and device sensor data;
IP address, network type, language, time zone, and approximate country/region information;
Wonder Piano software version number, and the method, type, and status of network access;
network quality data, crash logs, operation logs, service logs, local storage permissions, and information relating to reading and writing external mobile storage;
push tokens, error codes, and security risk-control information.
This type of information is basic information that must be collected to provide the Services.
When you use practice features, tuning detection, or similar features, the App may access the microphone and process audio. We may collect or generate:
piano audio or audio features during practice;
recognition results and analysis results such as pitch, rhythm, and wrong notes;
practice duration, practiced sections, completion status, ratings, and feedback;
error logs or performance data needed to troubleshoot issues.
Recordings may contain ambient sounds or fragments of human voice, and we will try to limit the scope of collection. During your practice session, from when you enter the music score screen and begin playing until you exit the music score screen, Wonder Piano will record audio. Recordings containing piano sounds will be uploaded to the server for computation and analysis. This is a core feature of Wonder Piano. The recordings will be used to calculate and analyze practice results, help us analyze and improve algorithms, and provide better Services. They will not be used for advertising and do not involve sensitive data such as faces or precise location.
When you use the piano tuning detection feature, the Wonder Piano App will start recording. The recording will be uploaded to the server and used only to analyze the piano’s tuning status. Recording will stop when you expressly exit the piano tuning detection screen.
We may receive:
subscription status, product ID, order ID, receipt, or transaction verification information;
subscription period, expiration time, and renewal status;
refund, cancellation, trial, or promotion status.
Payment processing, refunds, and billing information are handled by Apple, Google, or other payment service providers according to their terms and privacy policies.
When you copy and paste information in Wonder Piano, we will use your clipboard. We identify clipboard content only locally and will not upload your clipboard information to our servers.
According to applicable laws and regulations, in the following circumstances we may collect and use your relevant personal information without seeking your authorization or consent:
where directly related to national interests such as national security or national defense security, or directly related to major public interests such as public safety, public health, or the public interest in transparency;
where directly related to criminal investigation, prosecution, trial, or enforcement of judgments;
where necessary to protect major lawful rights and interests such as the life, property, or reputation of you or another person, but it is difficult to obtain the individual’s consent;
where the collected personal information has been disclosed to the public by you yourself;
where personal information is collected from lawfully and publicly disclosed information, such as lawful news reports or government information disclosure channels;
where necessary to enter into and perform a contract at your request;
where necessary to maintain the safe and stable operation of the products or Services provided, such as discovering and handling product or service faults;
where necessary for lawful news reporting;
where necessary to conduct statistical or academic research in the public interest, provided that any personal information contained in results provided externally for academic research or description is de-identified;
other circumstances provided by laws and regulations.
Please understand that the features and Services we provide to you are constantly updated and developed. If a feature or Service is not covered above and collects your information, we will separately explain the content, scope, and purpose of the collection through page prompts, interaction flows, website announcements, or other means, and obtain your consent.
Advertising identifiers and tracking purposes: We and our third-party advertising partners may collect and use device advertising identifiers, such as IDFA, or similar identifiers for advertising campaign performance analysis, advertising conversion attribution, and measuring advertising effectiveness. Before collecting such device advertising identifiers, we will obtain your express authorization through a system prompt, such as Apple’s App Tracking Transparency authorization. If you choose to deny authorization, this will not affect your use of the core features of this product, but the information will not be used for the advertising tracking or attribution purposes described above. For details on how such information is shared with, processed by, and used by third-party advertising services, please refer to the privacy policies of our partners.
Please note that Wonder Piano currently does not proactively obtain your personal information from third parties. If in the future we need to indirectly obtain your personal information from third parties for business development, we will clearly inform you of the source, type, and scope of use of your personal information before obtaining it. If the personal information processing activities required for Wonder Piano’s business exceed the scope of authorization and consent you originally provided to the third party, we will obtain your express consent before processing such personal information. In addition, we will strictly comply with relevant laws and regulations and require third parties to ensure the lawfulness of the information they provide.
2.1 Location of Information Storage. The personal information we collect from you may be transferred to, and stored at, servers located in Hong Kong, Mainland China, or other jurisdictions where we, our affiliates, or our service providers operate. We will implement appropriate safeguards, including encryption and secure transmission protocols, to ensure your data receives an adequate level of protection in accordance with applicable data protection laws.
Because Wonder Piano may be downloaded in multiple regions, information you submit may be transferred to, stored in, and processed in China. We will take reasonable technical and organizational security measures to protect the relevant information. If applicable law requires us to adopt specific cross-border transfer mechanisms, sign data processing documents, or provide additional explanations, we will handle this in accordance with applicable law and update this Policy.
2.2 We retain information only for the period necessary to achieve the purposes of this Policy, provide the Services, perform contracts, comply with law, resolve disputes, and protect security. For example:
account information: retained until account deletion or until no longer needed;
subscription and transaction records: retained according to platform, tax, accounting, and legal requirements;
practice records: retained until deleted by the user or guardian, account deletion, or until no longer needed for the Services;
When information is no longer needed, we will delete it, anonymize it, or take other lawful handling measures.
If our products or Services cease operation, we will notify you by push notification, announcement, or other means, and delete or anonymize your personal information within a reasonable period.
We take reasonable technical and organizational measures to protect information security, including access controls, encrypted transmission, permission management, log audits, data minimization, and employee/service provider management:
We strive to protect users’ information security to prevent loss, improper use, unauthorized access, or disclosure of information.
We will use various security protection measures within a reasonable security level to protect information security. For example, we may use encryption technologies, such as SSL, anonymization, and other measures to protect your personal information.
We strengthen the security capabilities of the software installed on your device through continuously improved technical measures to prevent leakage of your personal information.
No system can guarantee absolute security. If an information security incident occurs that may affect user rights, we will take notification, remedial, and reporting measures according to applicable law and platform rules.
The purposes for which we use information include:
creating, logging in to, maintaining, and protecting accounts;
providing score, practice, audio recognition, AI feedback, practice record, and achievement features;
processing memberships, subscriptions, order verification, and benefit status;
providing customer support, troubleshooting, and security protection;
improving recognition algorithms, product experience, content quality, and service stability;
sending service notices, subscription reminders, security alerts, and necessary operational messages;
complying with laws, app store rules, and regulatory requirements;
protecting the lawful rights and interests of Wonder Piano, users, minor users, and third parties.
If we wish to use information for a new purpose that is incompatible with the purpose for which it was collected, we will provide separate notice and obtain necessary consent where required by applicable law. We will not combine information stored in our analytics software with any personally identifiable information you provide in the application.
If our use of your personal information exceeds the purposes stated at the time of collection and the scope directly or reasonably related to those purposes, we will inform you again and obtain your express consent before using your personal information.
Wonder Piano is available only to users who meet the following age requirement: at least 13 years old, or the minimum digital consent age required by the laws of the user’s location, whichever is higher.
We do not knowingly collect, use, or request personal information from persons who do not meet the above age requirement, and we do not knowingly allow such persons to register for or use Wonder Piano. If you do not meet the above age requirement, please do not access, register for, purchase, or use Wonder Piano, and do not submit any personal information to us.
If we discover that we have collected personal information from a person who does not meet the above age requirement, we will delete the relevant information as soon as reasonably practicable and may restrict or terminate the relevant account.
If a user meets the above age requirement but is still a minor in the user’s location, we recommend that the user use the Services with the consent, supervision, and guidance of a parent or legal guardian. If a parent or legal guardian believes that we may have collected information from a person who does not meet the age requirement, or wishes to exercise rights such as access, correction, deletion, or withdrawal of consent on behalf of a minor user, the parent or guardian may contact us at support@wonderpiano.app.
6.1 We do not proactively share, disclose, or transfer your personal information to third parties. Except as described in this Policy or with your consent and after our risk assessment, we will not provide personal information to unrelated third parties.
We may share information in the following circumstances:
6.2 According to applicable laws and regulations, in the following circumstances we may share, transfer, or publicly disclose personal information without first obtaining authorization or consent from the personal information subject:
6.3 We will not publicly disclose the personal information we collect. If public disclosure is necessary, we will inform you of the purpose of the public disclosure, the types of information disclosed, and any sensitive information that may be involved, and obtain your express consent.
6.4 As our business continues to develop, we may conduct mergers, acquisitions, asset transfers, or similar transactions. We will inform you of the relevant circumstances and will continue to protect your personal information, or require the new controller to continue protecting your personal information, in accordance with laws and regulations and standards no lower than those required in this Policy.
7.1 Depending on the laws of your location, you may have the following rights:
to access personal information;
to correct inaccurate information;
to delete information or delete your account;
to withdraw consent;
to restrict or object to certain processing;
to obtain a copy of your data or exercise data portability;
to opt out of certain advertising, tracking, or sale/sharing;
to lodge a complaint with a supervisory authority.
Parents or legal guardians may exercise relevant rights on behalf of minor users or persons who do not meet the age requirement where required by applicable law. We may need to verify the requester’s identity and guardianship relationship.
7.2 During your use of Wonder Piano, to make it more convenient for you to access, correct, and delete your personal information, and to protect your rights to withdraw consent to the use of personal information and delete your account, we provide corresponding operation settings in the product design. You may refer to the following guidance.
After entering Wonder Piano, tap the profile picture area to access information query and access features.
After entering Wonder Piano, tap the profile picture area;
Tap “Feedback” → “Issue Feedback.”
If you have created an account, you may request deletion of your account and related data in the App. For details, please see the Wonder Piano Account and Data Deletion Notice.
After entering Wonder Piano, tap the profile picture area;
Tap “Settings” → “Account Deletion.”
Deleting your account will not automatically cancel App Store or Google Play subscriptions. You need to cancel the subscription separately on the applicable platform to avoid continued charges. In certain cases, customer support may need to assist with asset cleanup. After account deletion, we will delete or anonymize your personal information.
Wonder Piano is not offered to children under 13 and does not knowingly collect personal information from children under 13. If we discover that we have collected personal information from a child under 13, we will delete it as soon as reasonably practicable. If in the future Wonder Piano is offered to children under 13 or knowingly collects personal information from children under 13, we will update this Policy before launch and comply with COPPA requirements.
Wonder Piano may be downloaded in multiple regions, but we currently do not provide localized services or targeted marketing to residents of the European Economic Area or the United Kingdom. If applicable EEA or UK privacy laws grant you specific rights, you may contact us at support@wonderpiano.app to exercise those rights.
Where applicable, we will provide supplemental information about categories collected, purposes of use, categories of disclosure, opt-out of sale/sharing, limitation of use of sensitive personal information, and the right to non-discrimination. Personal information of minor users will not be sold.
We may revise this Policy from time to time. When the terms change, we will show you the changed content by push notification or pop-up when you log in or update the version.
Company Name: HONG KONG MANGO FUTURE TECHNOLOGY LIMITED
Mailing Address: FLAT/RM 08 15/F WITTY COMMERCIAL BUILDING, 1A-1L TUNG CHOI STREET, KOWLOON, HONG KONG, 999077
Customer Support and Privacy Request Email: support@wonderpiano.app
Age-Related / Guardian Request Contact: support@wonderpiano.app
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HONG KONG MANGO FUTURE TECHNOLOGY LIMITED