Last updated: August 29, 2026

Terms of Service

By downloading, accessing, creating an account for, or using Singdu, you agree to these Terms and our Privacy Policy. If you do not agree, do not use the Service.

You are responsible for activity performed through your account. You may not sell, transfer, share, or create an account for someone else without permission, impersonate another person, or use a username, profile photo, or other account information that violates another person’s rights.

You may not: • copy, sell, rent, sublicense, redistribute, or commercially exploit the Service or its catalog; • scrape, harvest, or systematically extract lyrics, translations, vocabulary, user information, or other data; • reverse engineer, decompile, bypass, or interfere with security or technical protections, except where applicable law expressly permits it; • use bots, scripts, exploits, or other unauthorized methods to manipulate learning progress, community activity, availability, or operation of the Service; • upload malware, overload the Service, probe for vulnerabilities, gain unauthorized access, or disrupt another person’s use; • use Singdu or its content to build or train a competing product, dataset, or machine-learning system without our written permission; or • use the Service in any way that is unlawful, fraudulent, abusive, or harmful.

Translations, transliterations, pronunciation guides, timing, difficulty ratings, and vocabulary explanations are educational aids. Language is contextual and these materials may be incomplete or inaccurate. Singdu is not a testing body or an accredited language course, and we do not guarantee a particular learning result or level of fluency.

This license does not allow you to distribute a Singdu Original Song or its instrumental version as a standalone music release, stem, or stock asset; sell, sublicense, or make it available for others to extract; register it or any materially similar version in Content ID or another rights-management system; claim exclusive ownership; use Singdu branding in a way that suggests endorsement; or use the material unlawfully. This license applies only to material identified as a Singdu Original and does not cover third-party videos, songs, lyrics, artwork, trademarks, user content, or other third-party material that may appear in or through the Service.

Singdu will not knowingly issue copyright claims against a project that uses a Singdu Original Song in compliance with this license. Automated systems or third parties may still make mistaken or conflicting claims, so Singdu cannot guarantee that a platform will never flag, restrict, demonetize, or remove content. If that happens, contact support@singdu.site with the project URL and claim details. You remain responsible for any other material in your project and for following the platform’s rules.

Singdu does not host, own, or control third-party videos and is not responsible for their availability, accuracy, advertising, or content. A rights holder or provider may block, remove, restrict, or change content at any time, which may affect a song’s availability or interactive learning features.

A Singdu KTV browser pairing code provides temporary access to control that session. Keep it private, do not post it publicly, and end or refresh the session if an unexpected device connects. You are responsible for actions taken through a pairing code you intentionally share. Singdu may expire, interrupt, or end a session to protect the Service or when its supporting providers are unavailable.

Connected-screen playback does not expand your rights in any song, video, lyric, translation, artwork, or recording. Except for the separate Singdu Original license above, KTV is for personal, non-commercial use. You are responsible for obtaining any permission required for public, commercial, venue, classroom, broadcast, or livestream use.

Purchases are processed by Google Play and managed with RevenueCat. Monthly and yearly subscriptions renew automatically and Google Play charges your selected payment method at the start of each billing period unless you cancel before renewal. You can manage or cancel a subscription through Google Play’s subscription settings. Uninstalling Singdu does not cancel a subscription.

If you cancel, you generally retain access until the end of the paid billing period. Refunds, payment disputes, regional cancellation rights, taxes, and price-change notices are handled under Google Play’s terms and applicable law. We may change the content included with Singdu Pro as the Service evolves, but an active subscription will continue to provide sustained Pro value.

By submitting User Content, you confirm that you own it or have all permissions needed to share it. You grant Singdu a worldwide, non-exclusive, royalty-free license to host, store, reproduce, display, distribute, and technically format that User Content only as reasonably needed to operate, secure, improve, and promote the Service. This license includes allowing our service providers to process the content for those purposes. It ends when the User Content is deleted from our systems, except where limited retention is reasonably necessary for backups, safety, legal compliance, or resolving disputes.

Do not submit User Content that: • infringes copyright, trademark, privacy, publicity, or other rights; • is illegal, threatening, harassing, hateful, discriminatory, defamatory, sexually exploitative, pornographic, or excessively violent; • reveals another person’s private or confidential information without permission; • impersonates or deceptively misrepresents a person or organization; • contains spam, scams, unauthorized advertising, malware, or harmful links; or • encourages self-harm, dangerous conduct, or other violations of these Terms.

If you encounter content that may violate these Terms, use the in-app reporting tools where available or contact us. Do not misuse reporting tools or knowingly make false reports.

Report suspected child-safety violations through the in-app reporting tool or email support@singdu.site. We will investigate reports, remove prohibited content, restrict or terminate responsible accounts, preserve relevant information where lawful and necessary, and report apparent CSAM or other child exploitation to the appropriate regional or national authorities when required by applicable law. Singdu complies with applicable child-safety laws and cooperates with valid legal process.

If you believe material available through Singdu infringes your copyright or other intellectual-property rights, email support@singdu.site with your contact information, identification of the protected work, the specific material and its location in Singdu, the basis for your claim, and confirmation that the information you provide is accurate and that you are the rights holder or authorized to act for them. We may remove or restrict material while reviewing a claim.

You are responsible for maintaining your device, internet access, and any carrier or data charges needed to use Singdu. We recommend keeping your own copy of any User Content you wish to preserve.

We may suspend or terminate access, remove User Content, or restrict features if you materially or repeatedly violate these Terms, create risk or harm for Singdu or others, or if required by law. Where reasonable, we will consider the nature of the issue before taking action. After termination, your right to use the Service ends, but provisions that by their nature should continue—including intellectual-property, disclaimers, limitations of liability, and dispute provisions—will remain in effect.

Nothing in these Terms excludes warranties, consumer guarantees, or other rights that cannot lawfully be excluded.

To the maximum extent permitted by law, Singdu’s total liability for claims arising from or relating to the Service will not exceed the greater of the amount you paid to Singdu for the Service during the 12 months before the event giving rise to the claim or US$100. These limitations do not apply where liability cannot lawfully be limited or excluded.

These Terms, together with the Privacy Policy and any additional terms presented for a specific feature, form the agreement between you and Singdu regarding the Service. If a translated version conflicts with the English version, the English version controls to the extent permitted by law.