End User License Agreement (EULA)

Version: 2.0 Last Updated: January 16, 2026

IMPORTANT – PLEASE READ CAREFULLY: This End User License Agreement ("Agreement") is a legal agreement between you (individual or single entity, hereinafter complying to as "User" or "You") and the developer of the "Anxin Learn" application (hereinafter referred to as "Licensor" or "We") regarding the software application "Anxin Learn" (hereinafter referred to as "Application").

This Application is intended for a diverse user base (including parents, children, and general users). If you are the guardian of a minor, this Agreement presumes that you have consented to your minor child's use of this Application and are responsible for all activities under the account. If you are a minor user, please read and confirm this Agreement under the companionship and guidance of your guardian.

By downloading, installing, registering an account, or using this Application, you agree to be bound by the terms of this Agreement. If you do not agree to the terms of this Agreement, please do not download, install, or use this Application.

Important Notice

Users are urged to read all terms of this Agreement carefully, especially the following content:

• Clauses exempting or limiting Licensor's liability: Section 2.2 (Data Loss Risk), Section 2.3 (Third-Party Service Disclaimer), Section 5.1 (Force Majeure and No Warranty), Section 5.2 (Limitation of Damages), Section 5.3 (Third-Party Platform Liability Isolation)
• Clauses limiting User rights: Section 1.4 (Restrictions on Use and Prohibited Conduct), Section 1.5 (Right to Terminate Account), Section 3.4 (Refund Policy)
• Governing Law and Dispute Resolution: Section 6.1 (Governing Law)

User Acknowledgement:

1. Method of Acceptance: By clicking "Accept", "Agree", registering an account, starting to use, or continuing to use this Application, the User is deemed to have agreed to and accepted all terms of this Agreement.
2. No Defense: The User may not subsequently raise any form of defense based on not having read or understood the content of this Agreement or similar grounds.
3. Age Applicability and Guardian Responsibility: The content rating of this Application may be suitable for all ages (e.g., 3+), but account registration, subscription management, and settings management must be performed by a guardian. We presume that the User registering and using this account is an adult with full civil capacity (guardian). When you input, manage, or sync any information regarding a minor within the app, it is deemed that you have provided explicit consent as a guardian.
4. Validity of Agreement: The terms of this Agreement constitute a contract governing the rights and obligations of both parties and shall remain valid unless otherwise mandated by law or specially agreed upon by both parties.

1. License Grant and Account Registration

1.1 Scope of License

The Licensor grants you a revocable, non-exclusive, non-transferable, limited license to download, install, and use this Application on devices you own or control, solely for personal, non-commercial purposes.

1.2 Account Registration

To use core features such as cloud synchronization and membership benefits, you need to register a user account. You comply to provide truthful and accurate registration information. Ownership of the account belongs to the Licensor; you only possess the right to use it.

1.3 Account Security Responsibility

You are responsible for safeguarding your account credentials (including passwords and third-party authorization statuses). The Licensor assumes no liability for any data loss, theft of points, or damage to membership benefits caused by your improper custody (such as sharing the account with others or password leakage).

1.4 Restrictions on Use and Prohibited Conduct

You explicitly agree not to engage in the following behaviors:

• Decompilation and Reverse Engineering: Do not decompile, disassemble, reverse engineer, or otherwise attempt to extract the source code of this Application.
• Network Sniffing and Protocol Analysis: Do not use any tools (such as Charles, Fiddler, Wireshark) to intercept, analyze, or tamper with network communications between this Application and the server.
• API Abuse: Do not bypass the Application interface to directly call backend APIs, or use automated scripts or bots for bulk operations.
• Cracking and Modification: Do not remove, disable, or bypass any security measures, technical protection measures, or usage restrictions of this Application (including but not limited to membership verification, parental locks).
• Account Sharing: Do not share, rent, sell, or in any way provide the account to third parties. Each account is limited to use by the registrant only.

Violation of the above terms will result in immediate termination of your account, and the Licensor reserves the right to pursue legal liability.

1.5 Right to Terminate Account

The Licensor reserves the following rights:

• Immediate Termination: If you violate any terms of this Agreement (including but not limited to Prohibited Conduct in Section 1.4), the Licensor has the right to immediately terminate your account without prior notice.
• No Refunds: Upon account termination, any paid subscription fees will not be refunded, and all your data in the cloud (including membership benefits, learning records, points) will be permanently deleted and cannot be recovered.
• No Reason Required: The Licensor has the right to terminate any account based on operational security, business planning, or other reasonable grounds without explaining the specific reason to you.

1.6 Intellectual Property Statement

1. Software Ownership: The Licensor legally owns all legitimate rights and interests in this Application, including but not limited to computer software copyrights, artwork copyrights, trademark rights, patent rights, and other intellectual property rights, as well as the right to operate this Application.
2. Third-Party Intellectual Property: This Application may involve third-party intellectual property (such as players or APIs from third-party video platforms). If such third parties have specific requirements for Users using their intellectual property, the Licensor will inform Users in an appropriate manner, and Users shall comply with such requirements.
3. Reservation of Rights: Rights not explicitly granted to the User in this Agreement are reserved by the Licensor. The User only obtains the limited usage license explicitly granted by this Agreement and does not possess any ownership of this Application.

1.7 Disclaimer for Unofficial Versions

Any software derived from this Application not authorized and officially released by the Licensor (including but not limited to cracked versions, modified versions, pirated versions, third-party repackaged versions) is illegal. Downloading, installing, or using such unofficial software may lead to unpredictable risks (including but not limited to data loss, account bans, privacy leaks, security vulnerabilities, malware infections, etc.), and all legal liabilities and disputes arising therefrom shall be unrelated to the Licensor. The Licensor only provides support for genuine software downloaded through official channels (App Store, Google Play, Official Website).

1.8 Third-Party Software Statement

This Application contains third-party software components (including open-source software and other third-party libraries). The copyrights of these components belong to their respective authors and are governed by their original license agreements (such as Apache 2.0, MIT, BSD, etc.). You can view the complete list of components and the full text of license agreements in App Settings - About - Third-Party Licenses. This Agreement does not alter the license terms of any third-party software.

2. Data Management and Cloud Service Disclaimer

Note: This Application adopts a "Local First + Cloud Sync" hybrid architecture.

2.1 Cloud Synchronization Mechanism (Optional Feature)

Specific versions of this Application (such as for registered users, premium members, or specific platform versions) may include cloud synchronization functionality. This feature uses third-party cloud infrastructure (hereinafter referred to as "Cloud Service") to synchronize your configuration information, learning progress, and points data. By using this feature, you agree that we may transmit and store your aforementioned encrypted data on cloud servers to maintain consistency across your different devices.

2.2 Absolute Disclaimer for Data Loss and Version Differentiation

Important Statement:

1. Optionality and Version Differences: Cloud synchronization is not a standard configuration for all versions of this Application. The Licensor reserves the right to enable, restrict, or disable this feature at any time based on product versions, subscription status, or technical adjustments. You should not assume that this feature will always be available at any time or on any device.
2. Non-Backup Nature: Even if enabled, the cloud synchronization function is provided solely as a convenience service for multi-device use and does not serve as a data backup or reliability guarantee.

The Licensor makes no warranties regarding the integrity, availability, or durability of cloud data. To the maximum extent permitted by applicable law, the Licensor assumes no liability for data synchronization failures, loss, or corruption caused by the following circumstances: (A) Cloud service provider server failures, maintenance, upgrades, or termination of service; (B) Network connection interruptions, instability, or hacker attacks; (C) You delete your account (this operation will permanently delete cloud data); (D) You fail to regularly backup important local data; (E) Software defects, compatibility issues, or data synchronization conflicts; (F) Force majeure or any other circumstances beyond the Licensor's reasonable control.

You explicitly agree and promise:

1. You understand that cloud synchronization is only a convenience feature and does not guarantee data security or reliability;
2. It is your responsibility to back up all important data yourself, and the Licensor assumes no data backup obligation;
3. You waive the right to file claims, lawsuits, or other legal recourse against the Licensor for any data loss.

2.3 Third-Party Service Authorization and Absolute Disclaimer

When you use this Application to connect to third-party services (including but not limited to Baidu Netdisk, Bilibili, YouTube, etc.), it represents that you authorize this Application to access corresponding content through official interfaces.

The Licensor assumes no liability for any actions of third-party services, including but not limited to:

• Service Interruption or Disabling: If a third-party platform (e.g., Baidu Netdisk) bans, limits, or cancels this App's OAuth interface access permissions, causing you strictly to be unable to use related features;
• Interface Changes: If a third-party platform updates API protocols, stops maintaining old interfaces, or changes data formats, causing this App's functions to fail;
• Account Penalties: If a third-party platform bans, throttles, or deletes data from your account because it detects your use of this App's OAuth authorization;
• Data Loss: If files in your third-party platform (e.g., Netdisk) are lost, damaged, or deleted for any reason;
• Privacy Leaks: If a third-party platform leaks your personal information or authorization credentials.

Regardless of whether the Licensor is at fault, you explicitly agree and promise:

1. You fully understand the risks of using third-party services and voluntarily assume all consequences;
2. You waive the right to file claims, lawsuits, or other legal recourse against the Licensor for any of the above losses;
3. If the Licensor suffers third-party claims due to your use of this App to connect to third-party services, you shall bear full liability for compensation.

3. Subscription Services and Payment Terms

3.1 Subscription and Purchase Models

The Application offers the following payment models:

1. Auto-renewing Subscriptions: Membership services with recurring billing on a set cycle (e.g., monthly, quarterly, or annually).
2. Non-periodic Purchases (Lifetime/One-time): Permanent membership services accessible after a one-time payment (e.g., "Lifetime Plan"). Specific prices and subscription cycles will be clearly displayed on the purchase page.

3.2 Payment and Auto-Renewal

• Payment: Fees will be deducted via one of the following payment channels:

  • App Stores: App Store or Google Play account (for mobile subscriptions)
  • Third-Party Payment: Alipay, WeChat Pay, Stripe, or other authorized payment service providers

• Auto-Renewal: Unless you turn off auto-renewal at least 24 hours before the end of the current subscription period, the subscription will automatically renew. Your account will be charged for renewal within 24 hours prior to the end of the current period.

3.3 Management and Cancellation

• Periodic Subscriptions: You can manage or cancel subscriptions at any time via your device's "Settings". Per platform rules, cancellation of an activated subscription during the current paid period is not allowed, and no partial refunds will be provided. The cancellation usually takes effect for the next billing cycle.
• Non-periodic Purchases: Lifetime memberships or one-time payment projects are treated as one-time purchases. Once purchased, these benefits are permanently linked to your account and cannot be canceled or revoked.

3.4 No Refunds Policy

Once paid, all subscription fees are deemed as license fees for the use of the service for the current period. Unless mandated by law or clearly provided for by the App Store's (App Store/Google Play) refund policy, the Licensor does not provide refunds for partial subscription periods or exchange points for cash. Refund requests must be directed to the corresponding payment channel (Apple/Google/Alipay/WeChat/Stripe, etc.), and the Licensor will follow the refund rules of the payment channel.

This Application provides a trial period for you to experience features. Once you complete a paid subscription, it is deemed that you fully understand and accept the service content.

3.5 Right to Change Service

We reserve the right to adjust service content, features, or subscription prices at any time. Price adjustments will take effect in the next subscription cycle. If you do not agree to the adjustment, you have the right to cancel the subscription before the end of the current cycle; continuing to use is deemed acceptance of the new price or new terms.

4. Content Standards and Parental Responsibility

Special Note for Minors: This Application strictly complies with the Children's Online Privacy Protection Act (COPPA) and relevant laws and regulations. If you are under 18, please read this Agreement accompanied by a guardian and use it only after obtaining guardian consent. If you are under 14, we will only process your personal information after obtaining explicit consent from your guardian.

4.1 Content Neutrality and Zero Liability Statement

This Application is solely a technical playback tool and does not provide any pre-set video content.

• User Generated Content (UGC): All playback links and video files are added or imported by You (User) yourself.
• Demo Data Clearing: Any initial demo data that may exist within the app (e.g., placeholders to show UI effects) is for reference only and will be automatically deleted after initialization.
• Zero Liability: The Licensor assumes no liability for the legality, copyright ownership, or validity of content imported by you. Any copyright disputes or legal liabilities arising from content imported by you are unrelated to the Licensor.

4.2 Legality Guarantee

You declare and guarantee that any content you import into this Application (including but not limited to Bilibili/YouTube links, Netdisk files) complies with laws and regulations and does not infringe upon the intellectual property rights of any third party.

4.3 Guardian Supervision Obligation

This Application is intended for use by parents and children, but configuration and management must be performed by a guardian. As a guardian, you shall bear full responsibility for the age-appropriateness and safety of imported content.

5. No Warranty and Limitation of Liability

5.1 Third-Party Dependencies & No Warranty

The core functions of this Application depend on the continuous availability of third-party services (including but not limited to Baidu Netdisk API, Bilibili playback protocols, backend data services, RevenueCat subscription verification, etc.).

• Not a Product Defect: If partial functions of this App fail due to third-party service providers changing interface protocols, stopping services, restricting access, or server failures, this does not constitute a quality defect of this Application.
• Disclaimer and No Refunds: The Licensor will try to adapt to new interfaces but does not guarantee that all functions can be restored. In such cases, the Licensor does not assume the obligation to refund subscription fees.

The Licensor explicitly declares that it provides no warranties regarding:

• Fitness for Purpose: No guarantee that this Application fits your specific usage requirements or expectations.
• Reliability: No guarantee that the service will be uninterrupted, timely, secure, reliable, or error-free.
• Result Guarantee: No guarantee that any content, data, or service you obtain through this App meets your expectations.

Server Maintenance and Interruptions: To ensure normal server operation, the Licensor needs to perform downtime maintenance, upgrades, or emergency repairs on servers regularly or irregularly. The Licensor assumes no liability for service interruptions or temporary inability to access data caused by such maintenance. The Licensor will try to provide advance notice and limit the interruption time to the shortest range possible.

Force Majeure Definition: Force majeure as referred to in this Agreement includes but is not limited to:

• Natural Disasters: Earthquakes, typhoons, floods, fires, etc.;
• Government Actions: Changes in laws and regulations, government directives, administrative orders, judicial rulings, etc.;
• Network Characteristics: Failures of domestic or foreign basic telecom operators, internet coverage limitations, DNS hijacking, network congestion, etc.;
• Technical Factors: Computer viruses, trojans, hacker attacks, DDoS attacks, system vulnerabilities, etc.;
• User Device: User device failure, OS version too old, insufficient device storage, device compatibility issues, etc.;
• Others: War, strikes, riots, epidemics, and other objective circumstances that cannot be foreseen, avoided, and overcome.

5.2 Limitation of Damages

In no event shall the Licensor be liable for any special, incidental, indirect, or consequential damages (including but not limited to loss of business profits, data loss, or other economic losses) arising out of the use or inability to use this Application, even if the Licensor has been advised of the possibility of such damages.

5.3 Third-Party Platform Liability Isolation (Third-Party Indemnification)

You explicitly understand and agree:

• This Application acts only as a technical intermediary, connecting you with third-party services (e.g., Baidu Netdisk, Bilibili, YouTube, etc.).
• All disputes, losses, or legal liabilities arising from third-party services shall be resolved directly by you with that third-party platform and are unrelated to the Licensor.
• If a third-party platform makes a claim against the Licensor due to your use of this App, you agree to indemnify the Licensor for all losses and expenses (including attorney fees) incurred thereby.

6. General Terms

6.1 Governing Law and Jurisdiction

The conclusion, execution, calculation, interpretation, and dispute resolution of this Agreement shall be governed by the laws of the People's Republic of China (excluding laws of Hong Kong, Macau, and Taiwan regions) and exclude the application of conflict of laws. If any dispute arises regarding the content or execution of this Agreement, both parties shall try to resolve it through friendly negotiation via the contact information in Section 7; if negotiation fails, either party may file a lawsuit with a competent People's Court in Shanghai, China.

6.2 Severability

If any provision of this Agreement is reviewed to be unenforceable, that provision shall be modified only to the extent necessary to make it enforceable, and the remaining provisions shall remain in full force and effect.

6.3 Right to Modify and Terminate Service

The Licensor reserves the following rights:

• Change Service at Any Time: The Licensor may change the service content, functions, or delete partial functions of this Application at any time for any reason, without prior notice.
• Terminate Service at Any Time: The Licensor may cancel or terminate services to any user at any time. Decisions to cancel or terminate services require no reason or notice.
• Data Irrecoverable: Once service is cancelled or terminated, any information stored by you in this App (including cloud data) may not be recovered.
• Modify This Agreement: The Licensor has the right to modify the content of this Agreement at any time, and the modified Agreement will be published within the App or on the official website. If you continue to use the service, it is deemed that you accept the modified Agreement. If not accepted, you have the right to stop using (but paid fees are non-refundable unless otherwise provided by law).

6.4 Reservation of Rights

Failure of the Licensor to exercise, failure to exercise in a timely manner, or failure to fully exercise any right enjoyed under this Agreement or law shall not be deemed a waiver of that right, nor shall it affect the Licensor's exercise of that right in the future.

7. Contact and Complaints

If you have any questions, complaints, or suggestions regarding this Agreement, or if you need to exercise your relevant rights, please contact us through the following methods. We will provide feedback as soon as possible within the time frame required by law:

• Email: support@aiwen.app
• Official Channels: You may also submit your questions through the [Feedback and Opinions] (if available) within the App.

Appendix A: Terms Specific to iOS Users (Apple Required)

Applicability: This Appendix strictly applies to users downloading this Application from the Apple App Store.

1. Party Acknowledgement: This Agreement is concluded between you and the Licensor only, and not with Apple. Apple is not responsible for the Application and the content thereof.
2. Maintenance and Support: Apple has no obligation whatsoever to furnish any maintenance and support services with respect to the Application.
3. Warranty and Refund: In the event of any failure of the Application to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price for the Application to you. To the maximum extent permitted by applicable law, Apple will have no other warranty obligation whatsoever with respect to the Application.
4. Product Claims: The Licensor (not Apple) is responsible for addressing any claims relating to the Application, including product liability, legal compliance, and consumer protection claims.
5. Intellectual Property Rights: In the event of any third-party claim that the Application infringes that third party's intellectual property rights, the Licensor (not Apple) will be solely responsible for the investigation, defense, settlement, and discharge of any such intellectual property infringement claim.
6. Third Party Beneficiary: Apple and Apple's subsidiaries are third-party beneficiaries of this Agreement. Upon your acceptance of this Agreement, Apple will have the right to enforce this Agreement against you as a third-party beneficiary thereof.

Appendix B: Terms Specific to Android Users (Google Play)

Applicability: This Appendix strictly applies to users downloading this Application from the Google Play Store.

1. Google Not a Party: You acknowledge that this Agreement is concluded between you and the Licensor only. Google LLC is not responsible for the Application or the content thereof.
2. Automatic Updates: You grant the Licensor (and extendedly grant Google) the right to automatically install Application updates on your device to fix bugs or improve service experience.