MiYu Note User Service Agreement (Last Updated: June 16, 2026)

Before you click the “Agree” button or continue to use the Service, please read all the terms of this Agreement carefully. By clicking “Agree” on your first use, you acknowledge that you have read, understood and accepted all the contents of this Agreement.

1. Definitions and Application

1.1 Parties to the Agreement

This User Service Agreement (hereinafter referred to as “this Agreement”) is entered into between you and the operator of MiYu Note (hereinafter referred to as “we” or “the Operator”) in respect of your use of MiYu Note (hereinafter referred to as “the Service”).

1.2 Key Definitions

“Service” / “MiYu Note”: the note-taking and document-management application operated by us, together with its related clients, websites and backend services.
“User” / “You”: the natural person or legal entity who accepts this Agreement and uses the Service.
“Subscription”: the right to use the paid features of the Service that you purchase from us.
“Subscription Period”: the continuous period of use you have selected and paid for at the time of subscription. The currently supported Subscription Periods come in four tiers: Monthly, Quarterly, Semi-Annual and Annual. Specific subscription types, billing cycles and prices are subject to the purchase page or the confirmation information at the time of your order, and we reserve the right to adjust them from time to time.
“Space Key”: the cryptographic key generated locally on your device and used to encrypt the body of your notes.
“Space Key Password”: the passphrase set by you, used locally to decrypt the copy of the Space Key stored in the cloud.
“E2EE Ciphertext”: the data uploaded to our server after your note bodies and attachments have been encrypted with your Space Key.
“Personal User”: a user who uses the Service for personal, non-commercial purposes.
“Business User”: a user who uses the Service for commercial or professional purposes.

1.3 No Other Relationship Created

This Agreement does not create any partnership, joint venture, employment or agency relationship between you and us.

1.4 Scope and Territory

This Agreement applies to the legal relationship arising when you use the Service through the MiYu Note official website, mobile applications, desktop clients or other official channels.
The Service is currently primarily offered to users in Mainland China. Our operating entity is located in Mainland China. If you access the Service from other regions, you remain bound by the general terms of this Agreement, and the mandatory laws of your jurisdiction shall still prevail.

1.5 Language Versions

The Simplified Chinese version of this Agreement is the authoritative version.
We currently provide, without limitation, the following languages: Simplified Chinese, Traditional Chinese, English, German and French. The actual list of supported languages follows the language list in the application.
In case of any inconsistency between language versions, the Simplified Chinese version shall prevail.

2. Service Content

2.1 Scope of Service

The Service provides Personal Users with storage, synchronization and management functions for notes and related materials. Specific features are subject to what is actually delivered by the product, and we reserve the right to adjust, improve, suspend or discontinue certain features.

2.2 Service Availability

The Service is provided on an “as-is” and “as-available” basis. We do not warrant that the Service will be continuously available, uninterrupted or error-free.
We may suspend part or all of the Service within a reasonable period for maintenance, upgrades, failures or other reasons, and will endeavour to give advance notice.

2.3 Geographic Availability

Due to legal and regulatory requirements, compliance obligations or business decisions, we may restrict or completely stop the availability of the Service in specific regions. The Service is currently primarily offered to users in Mainland China.

3. Eligibility and Accounts

3.1 Eligibility

You shall be a natural person with full civil capacity or a duly established and existing legal entity.
Use by minors is described in Section 11 of the MiYu Note Privacy Policy; this Agreement and the Privacy Policy are consistent with respect to age requirements.
You are not a person with whom we are prohibited from doing business (including, without limitation, users who are subjects of sanctions).

3.2 Account Registration and Use

You must provide a true and accurate email address or Mainland China mobile phone number for registration.
You shall properly safeguard your login credentials (email/phone number, verification codes, login password, Space Key password and Space Key) and shall be responsible for all operations performed through your account.
In principle, a single natural person may hold only one (1) account; multiple-account behaviour may be deemed abuse and may trigger account restrictions.

3.3 Account Security

If you discover any unauthorized use, leakage or loss, please notify us immediately through the in-app feedback channel or our security mailbox (security@miyunote.cn). We will assist in taking necessary measures within a reasonable time, but we are not liable for losses caused by your failure to notify us in time.
Where we reasonably suspect that account security is threatened, we may proactively take measures such as temporary freezing or mandatory secondary verification.

4. Data Security and End-to-End Encryption (Core Terms)

4.1 Encryption Mechanism

The Service uses End-to-End Encryption (E2EE) to process user data. Your note bodies and attachments are encrypted on your local device before being uploaded to the server.

4.2 Zero-Knowledge Architecture

The server does not retain any of your plaintext data. To support essential interactions and basic retrieval, the following information is stored or processed without end-to-end encryption: Space name, Space background image, note title, note icon, note cover image, user nickname, and registered email/phone number. Apart from these, the bodies of your notes and attachments cannot be read by the server in any technical way.

4.3 Space Key and User Responsibility

You expressly acknowledge and agree that the Space Key is the sole credential for decrypting your data.
Due to the zero-knowledge architecture, we neither hold nor are able to obtain your Space Key, and we cannot recover it for you.
If you lose your Space Key or Space Key password without having made a local backup, we cannot recover your data or reset your access by any technical means. Any permanent data loss and related damage arising therefrom shall be borne by you alone.
For the specific mechanism of the Space Key, see Section 3 of the MiYu Note Privacy Policy.

4.4 Backup Recommendation

The Service should not be the sole storage destination for your core assets. You should perform regular independent backups of your critical data.

5. User Conduct Rules

5.1 Basic Obligations

You undertake to comply with the laws and regulations of the People’s Republic of China (including the Cybersecurity Law, Data Security Law, Personal Information Protection Law, Consumer Rights Protection Law, Criminal Law, Public Security Administration Punishments Law, Provisions on the Governance of the Online Information Content Ecology, etc.) and the applicable laws of your jurisdiction.

5.2 Prohibited Conduct

You must not use the Service to engage in any of the following:

Creating, reproducing or disseminating content that violates national laws and regulations (including, without limitation, content endangering national security, advocating terrorism or extremism, inciting subversion of state power or secession, pornography, false information, or disturbing social order);
Infringing the legitimate rights and interests of others, including intellectual property rights, trade secrets, privacy, reputation or portrait rights;
Engaging in fraud, phishing, scams, dissemination of malicious code, gambling, pyramid selling or other unlawful acts;
Interfering with the normal operation of the Service (including, without limitation, circumventing usage limits, attacking servers, spreading viruses, fabricating traffic, scalping, etc.);
Reselling, sharing or transferring your account or subscription rights without authorization;
Using the Service for any commercial resale or top-up-on-behalf service;
Violating export-control or sanctions regulations of your jurisdiction or the People’s Republic of China;
Any other conduct in violation of Internet content-governance regulations such as the Provisions on the Administration of Internet User Public Account Information Services or the Provisions on the Governance of Cyberbullying Information.

5.3 Allocation of Responsibility for E2EE Content

Given that end-to-end encryption makes it technically impossible for us to review the specific content you store, you bear full compliance and legality responsibility for any information stored or transmitted through the Service.
Upon receiving a lawful, valid and legally binding notice or request from a judicial authority, government body or rights holder, we will cooperate in taking necessary measures (including, without limitation, suspending or terminating your account).

5.4 Abuse of Refund Rights

You understand and agree that using the Service’s refund policy in a “subscribe – refund – resubscribe” loop with the intent to avoid payment over the long term constitutes a breach of this Agreement.
We do not impose system-level limits on the number of refunds, but we reserve the right to conduct risk-control reviews and take operational measures, including without limitation: requiring additional verification, delaying the refund, refusing to offer you further subscriptions after your current subscription period ends, or restricting or permanently banning your account. For specific review objects, criteria and appeal procedures, see Section 3.6 of the MiYu Note Refund Policy.
Commitment to normal Users: We will only take the above measures when we have reasonable evidence that abuse has occurred; the refund rights of normal Users will not be affected.

6. Subscription and Payment

6.1 Subscription Types

We may introduce or adjust subscription types, billing cycles and prices from time to time based on business development.
The current Subscription Periods come in four tiers: Monthly, Quarterly, Semi-Annual and Annual. Specific subscription types, billing cycles and prices are subject to the purchase page or the confirmation information at the time of your order.
We reserve the right to introduce new subscription types or adjust existing subscriptions; if any adjustment is unfavourable to you, we will notify you in advance in accordance with Section 11 (“Changes to this Agreement”).

6.2 Renewal

We currently do not provide automatic renewal. After each Subscription Period ends, if you wish to continue using the paid features, you must renew manually by yourself through the application or other official channels before your subscription expires.
We will remind you via in-app notification or email no later than seven (7) calendar days before the end of your current subscription so that you can renew in time and avoid disruption.
Subscription Price Adjustments: If subscription prices are adjusted, we will notify you at least thirty (30) days in advance. If you do not agree to the adjusted price, you may choose not to renew during the notice period.

6.3 Payment and Taxes

Subscription fees are subject to the currency and amount confirmed at the time of purchase.
Payment channels include, without limitation: credit / debit cards, Apple Pay, Google Pay, Alipay, WeChat Pay, UnionPay, etc. Specific available channels are subject to those displayed on the checkout page.
Where subscription fees include applicable Mainland China value-added tax, we will indicate the amount before checkout and withhold and remit relevant taxes in accordance with national regulations; you may also choose to issue an invoice before checkout. Invoice details are set out on the checkout page.
Exchange rates for cross-border payments are subject to the rate at the time of payment processing.

6.4 Right of Withdrawal and Cooling-off Period (Reference)

The laws of Mainland China currently do not provide a unified statutory cooling-off period for online digital subscription services.
We additionally provide all Users with a thirty (30) calendar day no-reason full refund right (see Section 3 of the MiYu Note Refund Policy). After the 30-day no-reason refund period expires, you may still apply for a pro-rata refund under Section 3 of the MiYu Note Refund Policy.
The above entitlements do not affect any statutory rights you enjoy under the Consumer Rights Protection Law of the People’s Republic of China, the Product Quality Law of the People’s Republic of China, the Civil Code of the People’s Republic of China and other laws (including remedies where the Service is defective or does not conform to the agreement).

6.5 Transaction Confirmation

Upon successful subscription, we will send a transaction-confirmation email to the email address you have provided within twenty-four (24) hours, including the order number, amount, currency, renewal date, cancellation method and refund method.

7. Suspension, Restriction and Termination

7.1 Measures We May Take

Where any of the following circumstances occurs, we may, after reasonable judgement, take the following measures:

Temporary restriction: suspending certain or all functions;
Account ban: permanently or temporarily terminating your account;
Data handling: deleting offending content or banning the account as appropriate.

Triggering circumstances include:

Your breach of this Agreement or related policies;
Your violation of applicable laws or regulations;
A request from a judicial authority or government body;
Long-term inactivity (no login for twenty-four (24) consecutive months);
Reasonable suspicion of account theft or impersonation;
Fraud or abuse in connection with subscription refunds.

7.2 Notification and Appeal of Termination

Except in emergencies, we will notify you via in-app notification or email before taking restrictive or banning measures, stating the reasons and appeal channels.
You may submit an appeal through the customer service channel within fourteen (14) calendar days of receiving the notice.
We will not take adverse measures against you solely because you exercise statutory rights (including personal information rights, consumer complaints or refund applications).

7.3 Your Voluntary Termination

You may stop renewing or close your account at any time. Since we currently do not provide automatic renewal, you only need to refrain from renewing after your current Subscription Period ends.
For the specific procedure for closing your account, see Section 8 of the MiYu Note Refund Policy; for rules on data retention and destruction after closure, see Section 7 of the MiYu Note Privacy Policy.

8. Intellectual Property

8.1 Our Rights

The intellectual property rights in the software, interface design, brand identifiers, documentation and backend systems contained in the Service belong to us or our licensors. You may not copy, modify, distribute or create derivative works without authorization.

8.2 Your Rights

The intellectual property rights in the notes, attachments and other content you store through the Service belong to you or the original rights holder. We use such content only to the extent necessary to provide storage and synchronization services to you.

8.3 Feedback

If you provide us with feedback, suggestions or ideas, you agree that we may use, modify and integrate such feedback free of charge, in perpetuity, irrevocably and with the right to sublicense, without paying you any remuneration or attributing authorship.

8.4 Your E2EE Content

We make no intellectual property claim over your E2EE ciphertext. Please note, however, that pursuant to Section 4.2, non-encrypted metadata such as titles, icons and cover images are visible to us, and you should ensure that you have the lawful right or authorization for such content.

9. Disclaimer and Limitation of Liability

9.1 “As-Is” Provision

The Service is provided on an “AS IS” and “AS AVAILABLE” basis. To the maximum extent permitted by law, we expressly disclaim all warranties and representations, whether express, implied or statutory, including without limitation:

Merchantability, fitness for a particular purpose, and non-infringement;
Continuity, uninterruptedness or error-free operation;
Quality and reliability of results.

9.2 Disclaimer Specific to the E2EE Architecture

Given the nature of end-to-end encryption, we shall not be liable in any form for any data leakage, loss or inaccessibility caused by your device failure, system crash, misuse, poor safekeeping of keys/passwords or attacks on your device.

9.3 Force Majeure and Third Parties

We shall not be liable for any indirect or consequential damages arising from service interruption, synchronization delays or data loss caused by force majeure, network failures, third-party infrastructure or cloud-provider outages, or distributed network attacks.

9.4 Limitation of Liability

To the maximum extent permitted by law, our cumulative liability to you shall not exceed the subscription fees actually paid by you in the twelve (12) months preceding the event giving rise to the claim; however, this shall not affect any statutory rights you enjoy under mandatory laws such as the Consumer Rights Protection Law of the People’s Republic of China and the Civil Code of the People’s Republic of China (including losses caused by intent or gross negligence, personal injury, etc.). For free Users, the liability cap is zero and does not affect any applicable mandatory statutory rights.

9.5 Exclusion of Indirect Losses

To the maximum extent permitted by law, we shall not be liable for any indirect, incidental, punitive, special or consequential losses (including without limitation loss of profits, loss of goodwill or loss of data). However, losses caused by intent or gross negligence may not be excluded in advance pursuant to mandatory provisions such as Article 584 of the Civil Code of the People’s Republic of China.

10. Governing Law and Dispute Resolution

10.1 Governing Law

The conclusion, validity, interpretation, performance and dispute resolution of this Agreement shall be governed by the laws of the People’s Republic of China (for the purpose of this Agreement, excluding the laws of Hong Kong, Macau and Taiwan).
The mandatory provisions of the governing law shall prevail over any contrary provision in this Agreement.

10.2 Negotiation First

In the event of any dispute, please first contact us through the customer service channel. We will endeavour to resolve the dispute with you through negotiation within thirty (30) calendar days.

10.3 Jurisdiction and Remedies

Any dispute arising out of or in connection with this Agreement shall be resolved through negotiation; if negotiation fails, either party may submit the dispute to the People’s Court with jurisdiction at the registered address of Beijing Natural Symbol Information Technology Co., Ltd. for resolution through litigation.
If you are a consumer, any dispute between you and us in connection with this Agreement may also be submitted to the People’s Court with jurisdiction at your domicile.
You may also seek external remedies through public channels such as the 12315 Consumer Complaint Hotline, the National Internet Court or the China Consumers Association.

10.4 Arbitration

We currently do not require arbitration. Should we introduce an arbitration mechanism in the future, we will seek your separate, express consent.

11. Changes to this Agreement

Change Type	Notification Method	Effective Method
Material change (affecting your core rights)	In-app announcement + email + re-request consent	Takes effect from the date of your express confirmation; you may refuse the change and terminate the Service under the original Agreement
General change (wording adjustments, contact-information updates)	In-app announcement	Takes effect from the effective date stated in the announcement
Driven by legal change	In-app announcement + email	Takes effect from the effective date stated in the announcement; if the change is unfavourable to you, you may terminate the Service before the effective date

Historical versions are kept at https://miyunote.cn/terms.

12. Contact Us

If you have any questions about this Agreement, please contact us through the following channels:

In-app feedback: Settings → Help & Feedback
Customer service email: contact-us@miyunote.cn
Privacy-dedicated email: privacy@miyunote.cn
Security email: security@miyunote.cn

We commit to responding to your feedback within fifteen (15) business days of receipt.

13. General Provisions

13.1 Severability

If any provision of this Agreement is held to be invalid, void or unenforceable, the validity of the remaining provisions shall not be affected.

13.2 Entire Agreement

This Agreement, together with the MiYu Note Privacy Policy and the MiYu Note Refund Policy, constitutes the entire agreement between you and us with respect to the Service.

13.3 No Waiver

Our failure to exercise or delay in exercising any right under this Agreement shall not constitute a waiver of such right.

13.4 Assignment

You may not assign this Agreement without our written consent. We may assign this Agreement to an affiliated company, a merger counterparty or a business successor, in which case we will notify you via in-app announcement or email.

13.5 Force Majeure

See Section 9.3.

13.6 Language

The Simplified Chinese version of this Agreement is the authoritative version (see Section 1.5).

Appendix A: Contact Information

Purpose	Email / Channel
Customer service email	contact-us@miyunote.cn
Privacy-dedicated email	privacy@miyunote.cn
Security email	security@miyunote.cn
In-app feedback	Settings → Help & Feedback
In-app subscription management	Profile → My Subscriptions
In-app refund entry	Profile → My Subscription → Request Refund

A.1 Response Times

Customer service inquiries: within fifteen (15) business days
Privacy-rights requests: within fifteen (15) business days (response within the time limit stipulated by the Personal Information Protection Law; may be extended as required by law in complex cases)
Security vulnerability reports: initial response within twenty-four (24) hours

A.2 On Telephone Contact

We currently do not provide telephone-based customer service. All matters relating to customer service, privacy and security should be addressed through the email addresses or in-app feedback channels listed above.
Where a regulator or judicial authority requires telephone contact, please contact security@miyunote.cn to arrange an alternative communication method.

Appendix B: Operator Information

Operator name: Beijing Natural Symbol Information Technology Co., Ltd. (北京自然符号信息技术有限公司)
Registered address: Room 103-2617, 1st Floor, Building 21, Area 2, Tianzhong Yuan, Dongxiaokou Town, Changping District, Beijing
Unified Social Credit Code: 91110114MAKFN7JW4Q
Legal representative: Li Chaoyang (李超阳)
Company nature: Limited liability company (sole proprietorship by a natural person / one-person company)

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