Piano Sight Reading Membership Agreement
Updated: September 17, 2026
Effective: September 17, 2026
This Membership Agreement (the “Agreement”) is entered into between you and Lumen Labs Studio, China (“Lumen Labs”, “we”, “us”, or “our”) and applies when you purchase or use a Piano Sight Reading membership.
Please read this Agreement, the User Agreement, and the Privacy Policy before purchasing. The product, term, price, currency, tax, and benefits shown on the confirmation screen form part of your purchase terms.
Membership is a one-time purchase for a fixed term. It does not automatically renew or automatically charge you when the term expires.
I. Membership Service Content
1.1 During an active term, membership unlocks the premium practice, score, record, synchronization, or other features identified in the App for the product you purchase. The exact benefits are those shown in the App and applicable store at the time of purchase.
1.2 Membership is a limited right to access digital services, not ownership of the App, its content, or any underlying intellectual property. You must continue to comply with the User Agreement while using membership benefits.
1.3 Some benefits require a compatible device, network connection, account, microphone or MIDI input, or separately licensed score content. Membership does not grant rights in third-party musical works or guarantee compatibility with every device or instrument.
II. Activation Conditions and Effective Rules
2.1 You must use an account or guest profile supported by the App and complete the purchase through the official Apple App Store or Google Play flow. Do not purchase through an unauthorized seller or provide payment outside the official store.
2.2 Current products provide fixed terms of 30, 90, or 365 days. Actual availability is determined by the product displayed in the store. The membership begins when a valid transaction is verified and the entitlement is successfully credited.
2.3 If a network, store, or verification delay prevents immediate activation, keep the original transaction information and use Restore Purchases or contact support. Do not repeatedly purchase solely because activation is delayed.
2.4 A later verified fixed-term purchase normally adds its full term to the existing membership end time. It does not replace unused valid time. The entitlement shown by our verified account record controls unless applicable store records or law require correction.
III. Differences Between Android and iOS Payments
3.1 On iOS, Apple processes the transaction, payment method, receipt, cancellation, and refund under App Store rules. On Android, Google processes those matters under Google Play rules. We do not receive your full bank-card details.
3.2 Store accounts and purchase histories are managed separately by Apple and Google. Use the original store account and its Restore Purchases function when recovering a purchase. A transaction from one store cannot be converted into a transaction record in the other store.
3.3 After successful verification, membership is associated with the relevant Piano Sight Reading account and may be available on another compatible device after synchronization. This does not transfer ownership of the underlying store purchase or override store restrictions.
IV. Use and Restrictions of Membership Benefits
4.1 Membership is for the personal use of the account holder. It may not be sold, leased, transferred, sublicensed, exchanged for money, or shared for commercial gain.
4.2 You must not forge, alter, duplicate, or repeatedly reuse a receipt; bypass access controls; attack verification interfaces; exploit a refund or chargeback to keep benefits; or use any other fraudulent method to obtain membership.
4.3 A feature may have reasonable technical, device, fair-use, storage, or security limits. Such limits do not permit us to remove the essential benefit of a paid term without a remedy required by applicable law.
V. Membership Points and Digital Benefits
5.1 The current membership does not include cash, a deposit, stored monetary value, or points that can be withdrawn, transferred, traded, or redeemed outside the App.
5.2 Membership time and unlocked digital functions are contractual service benefits, not currency or property. Their use is limited to the App, the applicable term, and the account to which they are credited.
5.3 If the App later introduces a separate point or promotional benefit, its clearly disclosed rules will apply. Such a change will not convert existing membership time into cash or transferable value.
VI. Renewal, Expiration, and Service Changes
6.1 Membership does not automatically renew. When the 30-, 90-, or 365-day term expires, paid functions return to the non-member level unless you make another purchase.
6.2 Time continues to run according to the verified membership end time even if you do not use the App, lose network access, uninstall the App, change devices, or submit an account-deletion request. These events do not pause or extend the term.
6.3 We may improve or replace individual benefits for product, security, technical, legal, or store-policy reasons. If a change materially and adversely affects an active paid term, we will provide reasonable notice and any remedy required by law.
6.4 Final account deletion terminates unused account-based benefits. Deletion itself does not automatically create a refund. Review the Account Deletion Guide before submitting a request.
VII. Refunds and Exception Handling
7.1 Apple or Google controls charging and refund processing. Submit a refund request to the store where the purchase occurred and follow its rules. We cannot approve or directly issue a refund controlled by a store.
7.2 Membership is a digital service that begins after verification. Except where a store approves a refund, a material service defect makes the purchased service unusable, or applicable law requires a remedy, a completed and credited purchase is not refundable merely because it was unused or you changed your mind.
7.3 If you were charged but membership was not activated, use Restore Purchases and contact us with the store, product, transaction identifier, purchase time, and a redacted proof of purchase. Do not send a full payment-card number or account password.
7.4 If a refund, reversal, chargeback, cancellation, or fraudulent transaction is confirmed, we may remove the corresponding membership time or benefits. Nothing in this Agreement limits a mandatory consumer right to refund, withdrawal, repair, or another remedy.
VIII. Handling of Breaches
8.1 For suspected fraud or abuse, we may temporarily delay activation or restoration while verifying the transaction. We will use proportionate measures and restore a valid entitlement after the issue is resolved.
8.2 If a breach is confirmed, we may reject an invalid claim, revoke improperly obtained benefits, restrict the account, preserve evidence, or take other lawful action. Responsibility for resulting loss is determined under applicable law.
IX. Terms for Minors
9.1 A minor must purchase membership only with the consent and supervision required from a parent or legal guardian. Guardians should use store passwords, family purchase controls, and device parental controls.
9.2 If a purchase was made without required guardian authorization, contact the applicable store promptly. Refund availability is determined by store rules and mandatory local law.
X. Agreement Changes
10.1 We may update this Agreement for changes in law, store policy, security, technology, products, or membership benefits. We will publish the updated date and provide reasonable notice of a material change.
10.2 A change will not retroactively reduce a benefit already paid for unless required for law or security and accompanied by any remedy required by applicable law. If separate consent is legally required, the change applies only after valid consent.
XI. Governing Law and Dispute Resolution
11.1 This Agreement is governed by the laws of the People’s Republic of China, without depriving you of mandatory consumer protections in your place of residence.
11.2 The parties should first attempt to resolve a dispute through good-faith communication. If that fails, either party may submit it to a court with lawful jurisdiction. Nothing here prevents you from using a store complaint, regulator, or consumer-dispute process available under mandatory law.
XII. Contact Us
Service provider: Lumen Labs Studio, China.
Support email:
support@lumen-labs.app.
When contacting us about a purchase, include the platform, product, transaction identifier, purchase time, and a redacted screenshot if available. This English version controls if it conflicts with a translation, without limiting mandatory consumer or data-protection rights under applicable law.