Privacy Policy
Operator and scope — 안녕,쏘잉 operates Hello, Piano and is responsible for the personal data described in this policy. This policy applies to the website, web score library, iOS and Android apps, account support, score conversion, tester benefits and related service operations.
Data we process and why — When you sign in, we process the shared Hello account identifier, sign-in provider, email if supplied by that provider, Piano nickname, app-session information and account status to authenticate you and protect the service. We process plan and entitlement status, credit balance and ledger entries, purchase verification data, and tester-benefit status to provide features, prevent duplicate grants and resolve billing issues. We may also process IP address, browser or device information, request time, error and security logs to operate, troubleshoot and prevent abuse.
Scores, library and conversion — The private web library processes uploaded PDF, MusicXML, JPG or PNG content and related title, composer, filename, format, page count, file hash, shelf, timestamps and processing status. JPG or PNG pages are combined into one PDF in your browser before upload; the individual image files are not stored as separate server files. Viewing an original uses no credits. Manual conversion begins only after your explicit request and consent, and an authorized administrator may access the complete album, use AI-assisted tools, verify the result and upload MusicXML. Files are not sent automatically. Correction requests contain the selected measure and structured pitch edits. Results may require comparison with the original.
Data kept on your device — Practice records, MIDI events, microphone recordings and device-only scores are stored locally and are not backed up to the server or transferred between devices. Language preference is stored in the browser, and the web sign-in session is stored for the browser tab. Deleting the Piano account does not delete local files; use the app or device controls to remove them.
Service providers and account connections — Supabase provides shared Hello authentication, database and private file storage. Vercel hosts the website and relays requests to the Hello, Piano API. Google, Kakao or Apple processes sign-in information when you choose that provider, and Apple App Store or Google Play processes purchases made through that store. These providers may process necessary operational data under their terms or on behalf of the operator. We do not sell uploaded scores, recordings or practice records. Personal data is disclosed to another party only with a lawful basis, such as your request, consent, a service-processing arrangement or a legal obligation.
Retention and deletion — Service account, library, credit and conversion data is kept while needed to provide the service and is deleted or de-identified without undue delay when the purpose ends or the Piano account is deleted, except for legally required records and the minimal tester anti-abuse records described below. Deleting Piano does not delete the shared Hello identity or data belonging to other Hello services. Tester anti-abuse records remain tied to that shared identity until the shared Hello account is deleted. For transactions for which the operator has a Korean statutory record duty, display and advertising records are kept for six months, contract or withdrawal and payment or supply records for five years, and consumer complaint or dispute records for three years. Required records are separated from ordinary service data and erased when the applicable period ends.
Advertising — The mobile apps include the Google AdMob SDK. Depending on release and account settings, Google and disclosed advertising providers may process advertising or device identifiers, approximate location inferred from IP address, ad interactions, and diagnostic or performance data for ad delivery, measurement and invalid-traffic prevention. Where required, the app requests consent before ads and provides advertising privacy choices; iOS tracking permission also follows device settings. Piano recordings and local practice records are not supplied to the advertising SDK. Google privacy policy: https://policies.google.com/privacy
Website advertising and cookies — Google AdSense advertising is not currently active on this website. If it is activated, Google and other vendors identified in the consent interface may use cookies or similar storage based on visits to this or other sites for ad delivery, frequency control, measurement, fraud prevention and, where permitted, personalization. Users can manage personalized advertising at https://adssettings.google.com/. Before ads are served in a region that requires consent, the operator will activate the required consent flow, including a Google-certified consent management platform where required. The language setting and tab session described above remain functional service storage rather than AdSense advertising cookies.
Tester anti-abuse records — Testers receive Pro features until the operator-set end date, no wallet-credit grant and up to three conversion requests. Failed or cancelled requests restore the allowance, and real purchases are blocked for tester accounts. To prevent repeat claims, the shared Hello account identifier, benefit dates, conversion request identifiers and restoration status are stored separately from scores and practice records. They remain effective after Piano withdrawal and rejoining with the same shared account and are deleted when the shared Hello account is deleted.
Your choices and rights — You may request access, correction, deletion, suspension of processing, or withdrawal of consent where applicable. Sign in and use My account to delete the Piano account; Google and Kakao users can complete the verified web flow, while Apple and unsupported cases can use support. A request may require proportionate identity verification. You may also manage advertising consent in the app, browser or device settings. Some service functions may become unavailable when necessary data or consent is withdrawn.
Contact and safeguards — The privacy contact is 안녕,쏘잉 개인정보 문의, hello.official.team@gmail.com. Do not send passwords, authentication codes, private score files or recordings by email. The operator applies access controls, private account storage, secure transport, minimum administrative access and separation of legally retained records appropriate to the data and service. If a breach creates a notification duty, affected users and authorities will be notified as required by law.
Private Q&A — We use your Piano account identifier, submission time, title, message and administrator reply to handle your inquiry. The board publicly shows the submission date and whether a reply exists. Only your account and Piano administrators can read the title, question and reply. Deleting your Piano account also deletes its questions and replies from the board. Do not submit passwords, verification codes or payment details.
Policy changes — Material changes to the categories, purposes, retention, sharing, advertising or user rights will be announced in the service before they take effect when reasonably possible. Changes required immediately for law, security or urgent service protection may take effect sooner, with notice as soon as practical. The posted effective date identifies the current version.
Usage analytics — With your permission, Google Analytics 4 measures visits to public pages to improve the service. Account, private score and inquiry pages are excluded. URL query strings and fragments are not sent; advertising personalization is disabled. To withdraw permission, clear this site's stored data. Browser privacy signals are respected.