Terms of Service

Last updated: 7/20/2025

1. Service Description

Inrang provides online math education services, including:

• Interactive math challenges and practice problems
• Email-delivered daily math problems
• Tiered challenge levels for different skill levels
• Progress tracking and analytics
• Educational content for math olympiad preparation

2. Account Registration and Eligibility

Age Requirements

• Users under 13 require verifiable parental consent
• Users between 13-18 require parental supervision
• Adults (18+) may register independently

Account Responsibilities

• Provide accurate and complete information
• Maintain account security and confidentiality
• Notify us immediately of unauthorized access
• Use the service only for educational purposes

3. Subscription Plans and Pricing

Free Version

• 1 math problem via email weekly
• Basic problem explanations
• Tiered challenge levels
• No time limitations

Competition Track (Premium)

• Daily competition-level challenges
• Detailed step-by-step solutions
• Video explanations from experts
• Competition preparation materials
• Detailed progress reports
• Monthly coaching sessions
• Pricing: $9.99 per month, billed monthly

4. Payment Terms

• Billing: Monthly subscriptions are billed in advance
• Payment Methods: Credit card, debit card via Stripe
• Auto-Renewal: Subscriptions automatically renew unless cancelled
• Price Changes: 30 days advance notice for price increases
• Taxes: Prices exclude applicable taxes and fees
• Currency: All prices displayed in USD unless otherwise specified

5. Cancellation and Refunds

Cancellation

• Cancel anytime through your account settings
• Cancellation takes effect at the end of current billing period
• Access continues until subscription expires
• No cancellation fees

Refund Policy

• 30-Day Money-Back Guarantee: Full refund within 30 days of initial purchase
• Partial Refunds: Pro-rated refunds for unused time in exceptional circumstances
• Refund Process: 5-10 business days to original payment method
• Free Accounts: No refunds applicable

6. Acceptable Use Policy

Permitted Uses

• Educational and learning purposes
• Personal math skill development
• Teacher-supervised classroom use
• Parent-supervised home learning

Prohibited Activities

• Sharing account credentials with others
• Copying, distributing, or selling our content
• Reverse engineering or attempting to extract source code
• Using automated systems to access the service
• Violating intellectual property rights
• Submitting false or misleading information
• Interfering with service operation or security

7. Intellectual Property Rights

Our Content

• All content, problems, solutions, and materials are our property
• Protected by copyright, trademark, and other intellectual property laws
• Limited license granted for personal educational use only

User Content

• You retain ownership of content you submit
• You grant us license to use your content for service improvement
• You represent that you have rights to submitted content

8. Privacy and Data Protection

Your privacy is important to us. Please review ourPrivacy Policywhich explains how we collect, use, and protect your information. By using our service, you consent to the collection and use of information as described in our Privacy Policy.

9. Service Availability and Modifications

• Availability: We strive for 99.9% uptime but cannot guarantee uninterrupted service
• Maintenance: Scheduled maintenance with advance notice when possible
• Modifications: We may modify features, content, or functionality
• Discontinuation: 30 days notice if we discontinue the service

10. Limitation of Liability

Service Provided "As Is": We provide the service on an "as is" and "as available" basis.

Limitation of Damages: Our liability is limited to the amount paid by you in the 12 months preceding the claim. We are not liable for indirect, incidental, or consequential damages.

Educational Outcomes: We do not guarantee specific educational outcomes or improvements in mathematical performance.

11. Indemnification

You agree to indemnify and hold harmless Inrang from any claims, damages, or expenses arising from your use of the service, violation of these terms, or infringement of third-party rights.

12. Termination

By You

• Cancel subscription anytime
• Delete account through settings
• Data deletion upon request

By Us

• Violation of terms or policies
• Fraudulent or illegal activity
• Non-payment of subscription fees
• Notice provided except for immediate safety concerns

13. Dispute Resolution

Governing Law

These terms are governed by the laws of [Your Jurisdiction] without regard to conflict of law principles.

Dispute Resolution Process

1. Informal Resolution: Contact us first at [email protected]
2. Mediation: If informal resolution fails, binding mediation
3. Arbitration: Individual arbitration for unresolved disputes
4. Class Action Waiver: No class action lawsuits permitted

14. Contact Information

15. Changes to Terms

We may update these Terms of Service to reflect changes in our practices, legal requirements, or service features.

• Notice: Material changes will be communicated via email and website notice
• Effective Date: Changes take effect 30 days after notice
• Continued Use: Using the service after changes constitutes acceptance
• Disagreement: If you disagree, you may terminate your account

16. Severability and Entire Agreement

Severability: If any provision is found invalid, the remaining terms continue in effect.

Entire Agreement: These terms, together with our Privacy Policy, constitute the complete agreement between you and Inrang regarding the service.