Terms of Service

1. Acceptance of Terms

Welcome to CalcuMentor! These Terms of Service ("Terms") govern your access to and use of CalcuMentor's mobile application, website, and related services (collectively, the "Service"). By using CalcuMentor, you agree to be bound by these Terms.

If you do not agree to these Terms, please do not use our Service. We reserve the right to modify these Terms at any time, and your continued use constitutes acceptance of any changes.

2. Eligibility

You must be at least 13 years old to create an account. If you are under 18, you represent that you have obtained parental or guardian consent to use the Service.

For users under 13: Parents or guardians must create and manage the account on behalf of the child in compliance with COPPA (Children's Online Privacy Protection Act).

3. Account Registration

To access certain features, you must create an account using Google Sign-In or Apple Sign-In. You agree to:

• Provide accurate, current, and complete information
• Maintain the security of your account credentials
• Notify us immediately of any unauthorized access
• Accept responsibility for all activities under your account

You may not share your account, create multiple accounts, or transfer your account to another person without our permission.

4. Course Purchase and Access

4.1 Pricing

Individual courses are available for a one-time payment of $9.99 USD (or equivalent in your local currency). Prices are subject to change, but changes will not affect purchases already made.

4.2 Payment Processing

Payments are processed securely through Stripe. By making a purchase, you agree to Stripe's Terms of Service and authorize us to charge your payment method.

4.3 Access Grant

Upon successful payment, you will receive immediate access to the purchased course. Access is tied to your account and is non-transferable.

4.4 Promo Codes

Promo codes may be offered for free or discounted access. Codes are subject to expiration, usage limits, and may be revoked for abuse.

5. Refund Policy

We want you to be satisfied with CalcuMentor. If you're not happy with your purchase:

• 7-Day Guarantee: Request a full refund within 7 days of purchase by emailing support@calcumentor.com
• Eligibility: Refunds are available if you've completed fewer than 10% of the course problems
• Processing: Refunds are processed within 5-10 business days to your original payment method
• After 7 days: Refunds are at our discretion and will be evaluated case-by-case

Promo code redemptions and class enrollments granted by teachers are not eligible for refunds.

6. User Conduct

You agree to use CalcuMentor responsibly and ethically. You may NOT:

• Share answers or solutions with other users (academic integrity violation)
• Use automated tools, bots, or scripts to interact with the Service
• Attempt to reverse-engineer, decompile, or hack the Service
• Share your account credentials or purchase access for others
• Upload malicious code, viruses, or harmful content
• Abuse, harass, or threaten other users or staff
• Violate any applicable laws or regulations
• Use the Service for any commercial purpose without permission

Violation of these rules may result in account suspension or termination without refund.

7. Teacher and Class Features

Teachers can create classes and invite students via enrollment codes. By joining a class:

• You grant your teacher access to view your progress, attempts, and analytics
• Your teacher can assign problems and track your completion
• You understand that your work is visible to your teacher for educational purposes

Teachers agree to use student data only for educational purposes and to comply with applicable privacy laws (FERPA, COPPA, GDPR).

8. Intellectual Property

8.1 Our Content

All content on CalcuMentor, including course materials, problems, AI-generated feedback, software, and design, is owned by CalcuMentor or licensed to us. You may not copy, distribute, modify, or create derivative works without our written permission.

8.2 OpenStax Content

Some course content is adapted from OpenStax textbooks, which are licensed under Creative Commons (CC BY 4.0). We properly attribute OpenStax and provide links to original sources. Learn more at openstax.org.

8.3 Your Content

You retain ownership of your handwritten work and solutions. By using the Service, you grant us a non-exclusive, worldwide license to:

• Process your work through AI models (OpenAI, MathPix) for tutoring purposes
• Store and display your work within your account and to your teachers
• Use anonymized, aggregated data to improve our Service

We will never publish or share your individual work publicly without your explicit consent.

9. AI-Generated Content

CalcuMentor uses AI models (GPT-4, MathPix) to provide tutoring and evaluate your work. You understand that:

• AI responses may occasionally contain errors or inaccuracies
• AI feedback is educational guidance, not a substitute for human teachers
• We strive for accuracy but cannot guarantee 100% correctness
• Final academic decisions (grades, assessments) should involve human review

10. Disclaimers

CalcuMentor is provided "AS IS" and "AS AVAILABLE" without warranties of any kind, express or implied. We do not guarantee that:

• The Service will be uninterrupted, error-free, or secure
• Results or outcomes will meet your expectations
• Defects will be corrected immediately
• Content is accurate, complete, or up-to-date

Your use of CalcuMentor is at your own risk. We disclaim all warranties, including merchantability, fitness for a particular purpose, and non-infringement.

11. Limitation of Liability

To the maximum extent permitted by law, CalcuMentor and its officers, directors, employees, and agents shall not be liable for:

• Indirect, incidental, special, consequential, or punitive damages
• Loss of profits, data, use, or goodwill
• Service interruptions or errors
• Third-party conduct or content

Our total liability for any claim arising from your use of CalcuMentor shall not exceed the amount you paid us in the 12 months preceding the claim, or $100 USD, whichever is greater.

12. Indemnification

You agree to indemnify, defend, and hold harmless CalcuMentor from any claims, damages, losses, liabilities, and expenses (including legal fees) arising from:

• Your use of the Service
• Your violation of these Terms
• Your violation of any third-party rights
• Any content you submit or share

13. Account Termination

13.1 By You

You may delete your account at any time by contacting support@calcumentor.com. Deletion is permanent and cannot be undone. Refunds are subject to our refund policy (Section 5).

13.2 By Us

We may suspend or terminate your account if you:

• Violate these Terms or our policies
• Engage in fraudulent or illegal activity
• Abuse the Service or other users
• Remain inactive for an extended period (we'll notify you first)

Termination does not entitle you to a refund unless required by law.

14. Third-Party Services

CalcuMentor integrates with third-party services (Firebase, Stripe, OpenAI, MathPix, Sentry). Your use of these services is subject to their own terms and policies:

• Firebase Terms
• Stripe Terms
• OpenAI Terms
• MathPix Terms

We are not responsible for third-party services or any issues arising from their use.

15. Dispute Resolution

15.1 Informal Resolution

If you have a dispute, please contact us at support@calcumentor.com first. We'll work with you in good faith to resolve the issue.

15.2 Binding Arbitration

If informal resolution fails, disputes will be resolved through binding arbitration (except for small claims court). You waive your right to a jury trial or class action lawsuit.

Arbitration will be conducted by the American Arbitration Association (AAA) under its Consumer Arbitration Rules. The arbitrator's decision is final and binding.

15.3 Exceptions

Either party may seek injunctive relief in court for intellectual property violations or urgent matters requiring immediate action.

16. Governing Law

These Terms are governed by the laws of the State of California, United States, without regard to conflict of law principles. Any legal action must be brought in the state or federal courts located in California.

If you're located outside the U.S., you also agree to comply with your local laws regarding online conduct and acceptable content.

17. Changes to Terms

We may update these Terms from time to time. We'll notify you of material changes by:

• Posting the updated Terms on this page with a new "Last updated" date
• Sending an email to your registered address (for significant changes)
• Displaying an in-app notification upon your next login

Your continued use of CalcuMentor after changes take effect constitutes acceptance of the new Terms. If you don't agree, stop using the Service and contact us to delete your account.

18. Severability

If any provision of these Terms is found to be invalid or unenforceable, the remaining provisions will continue in full force and effect. The invalid provision will be modified to the minimum extent necessary to make it enforceable.

19. Entire Agreement

These Terms, together with our Privacy Policy, constitute the entire agreement between you and CalcuMentor regarding your use of the Service. They supersede any prior agreements or understandings.

20. Contact Information

If you have questions about these Terms, please contact us: