Terms and Conditions of Use

Article 1. Scope of Application and Acceptance of Terms

These Terms and Conditions of Use (“Terms”) govern your access to, account creation for, and use of the application, website, platform, and the features, content, products, and services provided by Rafetus (collectively referred to as the “Service”).

By:

• creating an account;

• clicking a button such as “I agree”, “Register”, “Continue”, or “Confirm”;

• confirming via other electronic methods; or

• continuing to access or use the Service after the Terms have been validly published, you acknowledge that you have read, understood, and agreed to be bound by these Terms.

These Terms are an integral part of the regulatory framework applicable to the Service, including:

• The Privacy Policy;

• The Payment and Refund Policy;

• Community standards, content regulations, or feature usage guidelines;

• other legal notices and policies validly published by Rafetus from time to time.

In the event of a discrepancy between these Terms and a specific policy applicable to a particular feature, the specific document shall prevail with respect to that feature within the relevant scope. If you use the Service as a consumer, your mandatory consumer rights under Vietnamese law are fully reserved. No provision in this document shall be construed to exclude or limit such rights.

Article 2. Interpretation of Terms

In these Terms, the following terms are understood as follows:

• “Rafetus” is the knowledge management application represented and operated by Le Tri Nhan.

• “User” or “you” is the individual or organization accessing, creating an account for, or using the Service.

• “Account” is the user account created to use part or all of the Service.

• “User Content” is any data, text, notes, resources, files, comments, images, profile information, publicly shared content, or other data created, uploaded, inputted, stored, or published by the user through the Service.

• “Private Content” is the portion of user content that you have not publicly disclosed and is set to private mode according to the Service's settings.

• “Public Content” is the portion of user content that you actively disclose, share, or allow to be displayed to other users or the community.

• “Artificial Intelligence Features” are features utilizing artificial intelligence models, machine learning, semantic analysis, information retrieval, recommendations, summaries, advanced search, Q&A, or similar automated technologies.

• “Resources” are any documents, files, notes, links, metadata, or other knowledge content that users store, organize, access, or manage through the Service.

• “Resource Metadata” is descriptive data about a Resource (for example title, author, cover, description, identifier, source, publication year, or other related information) provided by Rafetus or third parties.

Article 3. Description of Service

Rafetus is a knowledge management application that helps users store, organize, annotate, search, and work with Resources.

Some features of the Service may:

• support creating, editing, and linking notes;

• support searching or displaying Resource Metadata and Resources from lawful libraries or sources;

• provide artificial intelligence features for search, Q&A, and user experience optimization only when actively enabled or used by the user;

• allow users to publish content within the scope supported by the product.

Rafetus reserves the right to improve, update, temporarily suspend, change the interface, feature structure, or scope of Service provision for technical, operational, security, legal compliance, or product development reasons. In the event of a change that significantly affects the existing rights of users, Rafetus will notify in an appropriate manner before application, except in cases requiring urgent handling for security, safety, or at the request of competent authorities.

Article 4. Conditions of Use and Subject Capacity

Users must have full civil act capacity in accordance with legal provisions to independently enter into and perform these Terms. In case the user is underage or falls into cases requiring the consent of parents, guardians, or legal representatives under applicable law, registration or use of the Service shall only be carried out when such valid consent has been obtained. The user commits that the information provided to Rafetus is truthful, accurate, complete, and updated when there are changes.

Rafetus may refuse to provide the Service, refuse to create an account, or request additional verification if there are reasonable grounds to believe that:

• the registration information is inaccurate, fake, or misleading;

• the use of the Service shows signs of violating the law;

• the account is created for fraud, abuse, system sabotage, or infringement upon the legitimate rights and interests of another party.

Article 5. User Account

To use certain features, you may have to create an Account and set up login information.

You are responsible for:

• keeping confidential the login information, passwords, authentication codes, and login devices;

• not lending, renting, buying, selling, or unauthorizedly using your Account;

• immediately notifying Rafetus upon discovering or suspecting unauthorized access, leakage of login information, or acts infringing upon Account security.

You are responsible for all activities arising from your Account, except where you can prove that such activities arise entirely due to Rafetus's fault or due to unauthorized access that you promptly notified and for which you applied reasonable security measures. Rafetus may apply technical measures, identity verification, device verification, or additional security layers to protect the Account and system.

Article 6. Right to Use the Service

Provided that you comply with these Terms, Rafetus grants you a limited, non-exclusive, non-transferable, revocable right to access and use the Service for personal, internal, or other lawful purposes consistent with the nature of the Service. The aforementioned right of use does not mean transferring ownership of the Service, software, interface, database, trademark, design, content owned by Rafetus, or any other intellectual property rights.

Users shall not:

• copy, modify, decompile, decrypt, or create derivative works from the software or source code of the Service;

• unauthorizedly access the system, APIs, databases, servers, or administrative areas;

• use automated tools to unauthorizedly collect data, scrape data, attack, disrupt, or circumvent technical limits;

• use the Service for unlawful purposes or beyond the permitted scope.

Article 7. User Content

Article 8. Artificial Intelligence Features

Article 9. Resources, Resource Metadata, and Third-Party Sources

Rafetus may use lawful data sources, databases, or information services from third parties to support the identification, cross-referencing, standardization, and display of Resource Metadata. The use of these sources is carried out in accordance with the terms of use, licensing scope, and applicable requirements of the respective providers. Resource Metadata provided by third parties may change, be incomplete, not absolutely accurate, or no longer available at any given time. Rafetus makes reasonable efforts to display useful information but does not guarantee the absolute completeness, accuracy, or continuous availability of any data provided by third parties.

Rafetus may display, provide, or allow access to certain lawful Resources from third parties to the extent of:

• works, documents, or content whose copyright protection term has expired according to applicable laws;

• content provided under a license, permission, or other lawful exploitation basis; or

• content that Rafetus has the right to use, distribute, or provide to Users as agreed with the rights holder.

Rafetus allows Users to upload Resources (documents, files, notes, and other knowledge content) for personal storage, management, and use on the Service. Users may only upload content for which they have ownership, lawful right of use, or other lawful exploitation right in accordance with the law.

Users may not use the Service to upload, store, synchronize, post, link, distribute, disseminate, promote, or exploit:

• copies of books, documents, ebooks, audiobooks, or digital content infringing copyright, related rights, or other intellectual property rights;

• content for which the User does not have ownership or lawful right of use;

• tools, instructions, or methods aimed at circumventing, disabling, or unlawfully interfering with copyright protection measures or access control measures;

• content infringing upon the legitimate rights and interests of third parties.

Users are solely responsible for the legality, origin, and right of use for all content uploaded, stored, or used by them through the Service. Rafetus does not endorse, guarantee, or assume responsibility on behalf of the User regarding whether the User has full rights to such content. Rafetus is not a platform for disseminating copyright-infringing content and does not endorse the unauthorized uploading, sharing, dissemination, or exploitation of content infringing copyright, related rights, or other intellectual property rights. Rafetus reserves the right to apply appropriate technical, operational, and control measures to restrict the use of the Service for infringing purposes.

Unless Rafetus provides a feature or notice stating otherwise, Resources uploaded by the User shall only be used for the User's personal purposes within the respective account's scope. Rafetus may limit or disable sharing, publishing, republishing, distributing, or transmitting features to other users for these contents. In cases where the Service supports offline access, offline access rights only serve isolated, personal use and do not generate any right to copy, transfer, distribute, rent, resell, share, or commercially exploit the Resources.

Rafetus has the right to remove, block access, restrict display, suspend, or terminate the right to use the Service for any content or account when Rafetus has reasonable grounds to believe there are signs of violating the provisions of these Terms or applicable laws.

Article 10. Service Packages, Fees, Payment, and Renewal

Rafetus may provide:

• free packages;

• paid packages;

• trial features;

• a la carte features;

• promotional offers from time to time.

If a part of the Service is fee-based, Rafetus will clearly publish the following contents at a minimum before you pay:

• package or feature name;

• fee rate, billing cycle, and applicable taxes/surcharges (if any);

• unlocked features;

• conditions for renewal, termination, refund, or service cancellation;

• the start time of billing.

All fees are only collected when you have performed a valid payment confirmation act through the method supported by the Service.

If the Service has an auto-renewal mechanism, Rafetus will clearly publish:

• that the renewal is automatic;

• the renewal cycle;

• the price applied for the next cycle;

• how to turn off renewal or terminate before the new cycle.

Unless otherwise stipulated by law or if Rafetus's refund policy contains provisions more favorable to users, paid fees may not be refundable for the period the service has been activated or usage has commenced. However, Rafetus will consider reasonable refunds in cases such as:

• duplicate transactions;

• Rafetus's system errors;

• incorrect fee collection;

• the service is not provided as described to a significant extent;

• other cases required by law or voluntarily accepted by Rafetus.

Users are responsible for ensuring that the payment method they use is lawful and they have the right to use it.

Article 11. Privacy and Personal Data

The collection, storage, use, sharing, protection, and processing of personal data by Rafetus are carried out according to:

• Rafetus's Privacy Policy;

• the privacy choices set by you;

• these Terms;

• applicable law.

Rafetus commits to respecting your privacy settings and only processes data to the extent necessary for the notified purpose or other purposes with a valid legal basis.

Depending on the existing features of the product and applicable laws, you may:

• access, view, or request the provision of your data;

• edit or update information;

• delete a part of the content or request account deletion;

• withdraw the consent granted for some processing purposes;

• enable/disable artificial intelligence for each specific purpose if the product supports it;

• change the private/public status of content if the feature supports it.

In case you request account deletion or data deletion, Rafetus will process it within the scope of:

• what the law allows;

• the technical capabilities of the system;

• the obligation to store records, logs, backup data, data needed to resolve disputes, prevent fraud, or fulfill legal obligations.

In case Rafetus uses a third party to store or analyze data to operate the Service, Rafetus will require that party to comply with confidentiality and data protection obligations appropriate to the applicable law and Privacy Policy.

Article 12. Intellectual Property Rights of Rafetus

Except for User Content belonging to your rights or the rights of a third party, Rafetus and/or Rafetus's licensors are the owners or lawful rights holders of:

• applications, websites, software, source code, system structure;

• trade names, domain names, trademarks, logos, symbols, interfaces;

• databases, designs, layouts, instructional materials;

• content, images, audio, graphics, templates created by Rafetus or lawfully licensed for use.

You may not use Rafetus's intellectual property assets beyond the scope permitted in writing by Rafetus or in accordance with the normal functions of the Service. All rights not expressly granted to you in these Terms are reserved for Rafetus and/or Rafetus's licensors.

Article 13. Prohibited Acts

Users may not perform any of the following acts:

• Violating the law, social ethics, or infringing upon the legitimate rights and interests of other organizations or individuals.

• Impersonating others, providing false information, or deceiving Rafetus/other users.

• Uploading, storing, sharing, or disseminating content that violates copyright, intellectual property rights, privacy rights, image rights, or other rights of a third party.

• Disseminating spam, unauthorized advertising content, malicious code, malware, dangerous files, or links containing security risks.

• Attacking, probing, exploiting vulnerabilities, sabotaging, overloading, disrupting, or interfering with the normal operation of the Service.

• Unauthorizedly collecting other users' data, reselling data, unlawfully scraping data, or using the Service to train, develop, or evaluate competitive systems without Rafetus's permission.

• Taking advantage of system errors, billing errors, authentication errors, or display errors for personal gain.

• Using artificial intelligence or automated tools in a way that causes misunderstanding, fraud, community manipulation, or faking Service usage or interaction with Resources.

• Using the Service to disseminate or support copyright-infringing resources (for example pirated ebooks or unlawfully copied digital documents) or other unauthorized content.

Article 14. Suspension, Account Locking, and Termination

Article 15. Service Availability, Maintenance, and Changes

Rafetus makes reasonable efforts to maintain the Service operating stably, securely, and continuously. However, Rafetus does not guarantee that the Service will always be:

• uninterrupted;

• error-free;

• compatible with all devices, platforms, or operating system versions;

• without the need for maintenance, upgrading, or technical suspension.

Rafetus may suspend the Service or a part of the Service to:

• maintain;

• upgrade;

• fix bugs;

• ensure security and safety;

• troubleshoot;

• comply with legal requirements.

Where possible, Rafetus will give prior notice of scheduled maintenance or suspension.

Article 16. Limitation of Liability and Reservation of Consumer Rights

Rafetus is liable for damages arising from its own fault in accordance with applicable law.

Rafetus is not liable for damages arising entirely from:

• the user's faults, violations, or negligence;

• the user's use of artificial intelligence outputs without self-checking and appropriate evaluation;

• services, data, content, applications, or platforms of third parties chosen to be accessed by the user;

• network infrastructure incidents, power outages, user's equipment, large-scale cyber attacks, or force majeure events beyond Rafetus's reasonable control.

Rafetus does not guarantee that all Resource Metadata, artificial intelligence outputs, statistics, or recommendations are absolutely accurate or suitable for every specific purpose of individual users.

No provision in this document shall be interpreted as:

• excluding the mandatory liability that Rafetus must bear as prescribed by law;

• restricting the right to complain, claim compensation, or legally sue of the user as a consumer.

Article 17. Complaints, Feedback, and Dispute Resolution

All feedback, support requests, complaints, or disputes related to the Service, payments, data, or Accounts can be sent to the email address: support@rafetus.vn Rafetus will receive and handle feedback and complaints within a reasonable time depending on the nature of the case.

The parties prioritize resolving disputes through negotiation, goodwill, and cooperation. Negotiation does not waive the user's rights, especially as a consumer, to:

• request assistance from competent state agencies;

• request mediation or arbitration organizations when permitted by law and the parties have a valid agreement;

• initiate a lawsuit at a competent Court in accordance with Vietnamese law.

The governing law for these Terms is Vietnamese law.

Article 18. Notices

Rafetus may send notices to you through one or more of the following methods:

• email;

• in-app notifications;

• website notices;

• messages or other communication methods that you have provided or approved.

You are responsible for ensuring your contact information is accurate and valid. Your notice to Rafetus is only considered received when Rafetus confirms or when the message has been validly received by the system according to the method published by Rafetus.

Article 19. Amendment of Terms

Rafetus may amend or supplement these Terms to reflect:

• changes in the law;

• changes in the business model, features, technology, or suppliers;

• security, safety, or compliance requirements;

• risk management needs and user experience improvement.

When a change is material, Rafetus will notify in an appropriate manner prior to the effective date, except where the change must be implemented immediately due to legal requirements or to prevent urgent risks. If you do not agree with the amended content, you have the right to stop using the Service and terminate the Account according to the applicable process.

For the periodically paid Service portion still in effect, unless otherwise required by law or changes are more favorable to the user, Rafetus will not apply retroactively in a disadvantageous manner to the benefits you have paid for the current term.

Article 20. Severability, Assignment, and General Provisions

If one or more provisions in this document are declared invalid, illegal, or unenforceable, the rest shall remain in full force and effect. The invalid portion will be interpreted, amended, or replaced in a way closest to the original purpose and in accordance with applicable laws, without diminishing the minimum rights of consumers under the law.

Users may not assign their Accounts or transfer their rights and obligations under these Terms to another party without Rafetus's prior written consent. Rafetus may transfer its rights and obligations under these Terms to a lawful successor in the event of a merger, consolidation, division, separation, asset transfer, restructuring, or other corporate transactions, provided that such transfer does not unlawfully diminish the legitimate rights of users.

In case of multiple different interpretations of these Terms, the interpretation more favorable to the user as a consumer will be prioritized for application. These Terms are effective from the date indicated at the beginning of the document.