Masterpiece (世界名画) Terms of Use

Last updated: November 11, 2026. Effective: November 11, 2026.

Operator: Jinan Matrix Information Technology Co., Ltd. ("we", "us")

By downloading, installing or using Masterpiece (the "App"), you agree to these Terms and our Privacy Policy. If you do not agree, do not use the App. These Terms supplement Apple's Licensed Application End User License Agreement; where they conflict, these Terms apply, without limiting Apple's rights under it. If this English version differs from the Chinese version, the Chinese version prevails.

1. The Service

The App lets you browse and view masterpieces in high resolution, read commentary, and enjoy the daily artwork, exhibitions and favorites. No account is needed to browse or purchase; signing in (Sign in with Apple or email code) syncs favorites across devices. Free users may fully view a limited number of artworks per day, as shown in the App.

2. Accounts

Keep your Apple Account and email secure. The Apple Account used for Sign in with Apple may differ from the one used for App Store purchases: one identifies your App account, while the other verifies purchases. They are not automatically merged.

Linking, unlinking and email changes: under Me → Account, you may link one Apple identity and one verified email to the same App account. Either linked method accesses that account's favorites and account benefits. An identity belonging to another App account cannot be linked directly; accounts are not automatically merged. Adding a method may require a recent sign-in. Unlinking or changing an email requires verification of the retained method and relevant credentials; you cannot remove the last sign-in method. These changes do not delete your account, change its favorites or purchase ownership, or transfer benefits to another account.

Stopping Sign in with Apple in iOS: removing Masterpiece in Settings → Apple Account → Sign in with Apple (names may vary by iOS version) revokes Apple authorization; it does not delete your App account or remove the association within the App. When notified, we invalidate existing sessions and discard the revoked Apple token, while retaining your account and Apple identity association so reauthorization can recover the same account and benefits. You may still sign in with a linked email, then authorize Apple again or verify the email to remove the Apple link. If Apple is the only method, link an email before removing the association.

Account deletion: you can delete your account at any time under Me → Account → Delete Account, without first canceling a subscription. We delete the account, Apple and email sign-in identities, favorites, sessions and free-quota claims, unbind purchases and unlink push devices. If we still hold an active Apple token, we request revocation and retry failures in the background. The original account, favorites and sign-in methods cannot be recovered; signing in again with the same email or Apple identity creates a new account. Necessary records retained for purchase verification, restoration, refunds, accounting and preventing duplicate gifts are described in the Privacy Policy.

Benefits after deletion: deleting an App account does not cancel App Store subscriptions, automatically issue refunds or restart purchased benefit periods. Manage cancellation separately through Apple. Restore Purchases with the App Store Apple Account used for payment can recover verified, still-valid subscriptions and unrefunded legacy purchases; released purchases may be linked to a new App account under the purchase-binding rules. Restoration does not recover deleted favorites, extend expired subscriptions or grant gifts again. An already-claimed gift keeps its original dates; if still valid, only its remaining period can be used after the original purchase is associated again.

3. Masterpiece Pro Auto-Renewable Subscriptions

Subscription: "Masterpiece Pro", offered as monthly and yearly auto-renewable subscriptions, gives full access to high-resolution images, full commentary and points of interest for all artworks, as described on the purchase screen.
Price: prices, currencies and offers vary by App Store country or region. The price shown in the App and on Apple's purchase confirmation sheet before you confirm applies. Price changes are notified under Apple's rules and require your consent where applicable.
Payment: charged to your Apple ID account at confirmation of purchase.
Auto-renewal: the subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period.
Free trial: the yearly subscription includes a 7-day free trial for eligible new subscribers (eligibility is determined by Apple). After the trial, you will be charged the yearly price and the subscription begins, unless you cancel at least 24 hours before the trial ends. Any unused portion of the trial is forfeited if you purchase another subscription during it.
Manage and cancel: manage or turn off auto-renewal any time in Settings → Apple ID → Subscriptions. Cancellation takes effect at the end of the current period. Deleting the App or your account does not cancel a subscription.
Refunds: all payments are processed by Apple; request refunds through Apple (reportaproblem.apple.com) under App Store policies.
Restore purchases: after reinstalling or changing devices, use Restore Purchases with the App Store Apple Account used for payment to recover still-valid benefits. This is separate from Sign in with Apple authentication.

Purchase binding: without signing in, Apple-verified purchases can be used on the relevant device. When signed in, each purchase may be associated with only one registered App account. Changing a linked Apple identity or email does not change purchase ownership. If a purchase belongs to another account, sign in to that account or contact us; linking an identity cannot duplicate benefits across accounts. A purchase released by account deletion may be linked to a new account after Apple purchase verification. Gift eligibility and validity remain tied to the original purchase.

4. Legacy Benefits

"Legacy users" are users who made a one-time App Store purchase (lifetime unlock) in versions before 8.0.0, as verified by Apple-signed purchase records. Legacy users receive:

390 classic artworks, forever: the original 380 artworks plus 10 bonus artworks, viewable permanently and without the daily free quota, whether or not you subscribe to Pro or sign in;
2 months of Pro, free: claimable once after signing in, lasting 2 months from the time of claiming; it ends automatically and is never renewed or charged.

Binding: legacy benefits can be bound to only one registered account. Once the purchase of an Apple ID is bound to an account in the App, it cannot be bound to any other registered account, and the Pro gift can be claimed only once (reinstalling, changing devices or re-registering does not grant it again). Deleting the bound account releases the binding; for any other transfer, contact us. Refunded purchases are not eligible.

5. Content and Intellectual Property

Artwork images are mainly sourced from the public domain and open-access collections. Commentary, curation texts, interface and software belong to us or their respective owners. You may use them for personal, non-commercial purposes only; no copying, scraping, resale or bulk downloading for commercial use.

Content availability: due to requests from holding institutions, licensing changes or content adjustments, some artworks may be replaced or removed. We make no commitment to the permanent availability of any specific artwork and will substitute content of equal quality where necessary.

If you believe content in the App infringes your rights, contact us with proof of ownership and we will review it promptly.

6. Acceptable Use

Do not reverse engineer or crack the App, circumvent access controls or payments, interfere with our servers, or use the App for any unlawful purpose. We may restrict or terminate service for violations.

7. Disclaimer and Limitation of Liability

THE APP IS PROVIDED "AS IS". WE DO NOT GUARANTEE UNINTERRUPTED OR ERROR-FREE SERVICE. TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE ARE NOT LIABLE FOR INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, AND OUR TOTAL LIABILITY SHALL NOT EXCEED THE AMOUNT YOU PAID FOR THE APP IN THE PRECEDING 12 MONTHS. This does not affect consumer rights that cannot be excluded by law.

8. Changes

We may update these Terms and will post the new version on this page; material changes will be notified in the App. Continued use means acceptance.

9. Governing Law

These Terms are governed by the laws of the People's Republic of China, excluding conflict-of-law rules. Disputes shall first be resolved amicably, failing which they shall be submitted to the competent people's court where the operator is located. Mandatory consumer protection laws of your jurisdiction apply where they give you greater protection.

10. Contact Us

Email: askrsw@163.com