Terms of Service

Last updated: 11/30/2025

1. Acceptance of Terms

By accessing and using Ultimate Calculus Solver ("the Service"), you accept and agree to be bound by the terms and provisions of this agreement. If you do not agree to these terms, please do not use the Service.

2. Description of Service

Ultimate Calculus Solver provides an online calculator for solving calculus, differential equations, linear algebra, and vector calculus problems. The Service includes both free and paid (Pro) subscription tiers.

3. User Accounts

To access certain features, you must create an account. You agree to:

  • Provide accurate and complete information
  • Maintain the security of your account credentials
  • Notify us immediately of any unauthorized use
  • Be responsible for all activities under your account

4. Acceptable Use

You agree not to:

  • Use the Service for any illegal purpose
  • Attempt to gain unauthorized access to the Service
  • Interfere with or disrupt the Service
  • Use automated systems to access the Service without permission
  • Reverse engineer or attempt to extract source code
  • Resell or redistribute the Service

5. Subscription and Billing

Free Tier

The free tier provides access to basic calculator features. We reserve the right to modify or discontinue free tier features at any time.

Pro Subscription

Pro subscriptions are billed monthly or annually via Stripe. You agree to:

  • Provide valid payment information
  • Authorize recurring charges
  • Pay all applicable fees and taxes

Cancellation and Refunds

You may cancel your subscription at any time through your billing portal. Cancellations take effect at the end of the current billing period. We do not provide refunds for partial months.

6. Intellectual Property

The Service and its original content, features, and functionality are owned by Ultimate Calculus Solver and are protected by international copyright, trademark, and other intellectual property laws.

You retain all rights to the problems and data you input into the Service. By using the Service, you grant us a license to store and process your data solely to provide the Service.

7. Disclaimer of Warranties

THE SERVICE IS PROVIDED "AS IS" WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED. WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, OR FREE OF HARMFUL COMPONENTS. MATHEMATICAL RESULTS SHOULD BE INDEPENDENTLY VERIFIED FOR CRITICAL APPLICATIONS.

8. Limitation of Liability

IN NO EVENT SHALL ULTIMATE CALCULUS SOLVER BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING OUT OF OR RELATING TO YOUR USE OF THE SERVICE.

9. Privacy

Your use of the Service is also governed by our Privacy Policy. Please review it to understand our practices.

10. Changes to Terms

We reserve the right to modify these terms at any time. We will notify users of material changes via email or through the Service. Continued use after changes constitutes acceptance of the new terms.

11. Termination

We reserve the right to suspend or terminate your access to the Service at any time for violations of these terms or for any other reason at our sole discretion.

12. Contact

If you have questions about these terms, please contact us at ultimatecalculussolver@gmail.com.