Terms of Service

Last Updated: February 15, 2026

1. Service Overview

Inkgrade is an AI-powered assistant service that allows users to submit handwritten homework or exam papers in subjects such as mathematics, physics, and other disciplines. The service identifies questions and handwritten answers through AI and provides analysis and recommendations.

2. Account and Security

2.1 Registration Requirements: To use certain features, you must register an account and provide accurate information. You must be at least 13 years old (or the minimum age required by your jurisdiction). Users under 18 (or the legal age of majority) must use the service under parental or guardian supervision

2.2 Responsibility and Security: You are responsible for keeping your account credentials confidential and assume full responsibility for all activities under your account. Inkgrade does not monitor accounts and is not liable for damages caused by unauthorized use

2.3 Account Termination: Inkgrade reserves the right to immediately terminate or suspend your account and access to services at any time without prior notice or liability, such as when you violate terms, laws, or engage in harmful activities. You may also contact [email protected] to request account deletion.

3. User Content and Rights

3.1 Content Definition: Question photos provided by users are referred to as "Input," and text and analysis results generated by the service based on input are referred to as "Output." Together they are referred to as "Content." 2. Output Usage Rights: Subscription and Paid Users: Subject to compliance with terms, Inkgrade grants you full rights to "Output" generated during your subscription period. Free Users: "Output" may only be used for lawful, personal, and non-commercial purposes. Any commercial use is strictly prohibited.

4. Intellectual Property

The service, its original content, and features are owned by Inkgrade and protected by intellectual property laws. Users retain all rights to "Content" but grant Inkgrade a broad license to operate and promote the service.

5. Acceptable Use Policy

Users agree not to use the service for the following activities

5.1 Violating any laws or regulations or infringing on others' rights (including intellectual property and privacy rights)

5.2 Providing or generating defamatory, obscene, violent, hateful, harassing, discriminatory, or otherwise offensive content

5.3 Harming or attempting to harm minors

5.4 Use in medical, legal, investment, or other high-risk decision-making fields

5.5 Attempting to bypass technical protection measures, unauthorized access or scraping, reverse engineering the service, or interfering with or disrupting service security and performance.

6. Subscription and Payment

6.1 We offer free trials, paid credit packages, and paid subscription options, with specific features depending on the type you choose

6.2 Subscriptions will automatically renew unless canceled before the renewal date

6.3 Inkgrade reserves the right to adjust subscription fees or service prices at any time. Price changes will take effect on your next renewal.

7. Refund Policy

7.1 Unless otherwise required by applicable law, all payments for subscriptions, credits, and other paid items are final and non-refundable

7.2 In exceptional circumstances, Inkgrade may consider partial refund requests at its discretion. Refund amounts will be calculated strictly based on the proportion of unused credits

7.3 In certain circumstances (such as account restrictions due to violations, purchases using promotional discounts, or credits already consumed), Inkgrade reserves the right to refuse refunds.

8. Disclaimer and Limitation of Liability

8.1 AI Disclaimer: "Output" generated by the service may be inaccurate, incomplete, outdated, or misleading and should not be considered factual or professional advice. Users must evaluate the accuracy, legality, and applicability of "Output" themselves and should not use it for decisions that may have significant legal, financial, medical, or other material impacts

8.2 Service Provided "As Is": Inkgrade does not guarantee that the service will meet your needs, be uninterrupted, secure, or error-free, or that information obtained through the service is accurate, timely, or complete

8.3 Limitation of Liability: To the maximum extent permitted by law, Inkgrade is not liable for any indirect, incidental, special, or consequential damages arising from the use or inability to use the service. Its total liability shall not exceed the amount you have paid to it in the past 12 months.

9. Other Terms

9.1 Privacy: User information is considered sensitive information, and Inkgrade will take reasonable security measures to process it. The Privacy Policy constitutes part of this agreement

9.2 Agreement Modification: Inkgrade may update these terms from time to time. Updated terms become effective immediately upon publication. Continued use of the service indicates acceptance of the revised terms

9.3 Contact: For questions, please contact [email protected].

Important Notice

By continuing to use Error Tracking, you acknowledge that you have read, understood, and agree to be bound by these Terms of Service.