Terms of Use
Last updated: 1/17/2026
Acceptance of Terms
By accessing and using X2Y dev Tools, 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 our services.
User Accounts
Account Creation: To access Pro tools, you must create an account using a valid email address. Creating an account enables secure payment processing via PayPal and allows you to receive email updates about new tools and features we're constantly adding to the platform.
Free Trial: Each Pro tool offers a 5-minute free trial that you can activate after creating an account. This trial is available once per tool and allows you to test the functionality before purchasing. After the trial expires, you'll need to upgrade to Pro access ($5 one-time) to unlock all Pro tools permanently.
Account Security: You are responsible for maintaining the confidentiality of your account credentials and for all activities that occur under your account.
Account Termination: We reserve the right to suspend or terminate accounts that violate these Terms of Use.
Use of Services
Permitted Use: X2Y dev Tools provides free web-based developer utilities for personal and commercial use. You may use our tools for any lawful purpose.
Prohibited Use: You may not use our services to:
- Violate any applicable laws or regulations
- Infringe on intellectual property rights
- Distribute malware, viruses, or harmful code
- Attempt to gain unauthorized access to our systems
- Use automated systems to access our services excessively
- Upload illegal, offensive, or copyrighted content
Service Availability
As-Is Basis: X2Y dev Tools is provided "as is" without any warranties, express or implied. We do not guarantee that our services will be uninterrupted, error-free, or secure.
No Liability: We are not responsible for any data loss, damages, or issues arising from the use of our tools. Always keep backups of important files.
Intellectual Property
Your Content: You retain all rights to any files, data, or content you process or host using our tools. We do not claim ownership of your content.
Our Platform: The X2Y dev Tools platform, including its design, code, and functionality, is protected by copyright and other intellectual property laws.
Third-Party Services
Our platform may integrate with third-party APIs and services (such as npm registry, bundlephobia, PayPal, Supabase, Vercel Blob). We are not responsible for the availability, accuracy, or policies of these third-party services.
Payment and Refund Policy
Pro Access Payment: X2Y dev Tools offers optional Pro access for a one-time payment of $5.00 USD. This payment grants you lifetime access to all premium tools and features.
Trial System: Before purchasing, you can try each Pro tool for 5 minutes free. This allows you to evaluate the tools and ensure they meet your needs before making a purchase.
Payment Processing: All payments are processed securely through PayPal. By making a payment, you agree to PayPal's terms of service and privacy policy.
Account Required: Pro access is linked to your account. You must be logged in to purchase and access Pro tools.
Non-Refundable: Due to the instant digital nature of Pro access and the low one-time cost, all payments are final and non-refundable. Please ensure you want Pro access before completing your purchase.
Access Restoration: Your Pro access is tied to your account. If you have any issues accessing Pro tools after payment, contact support with your order ID.
Lifetime Access: Your one-time payment grants you lifetime access to all current and future Pro tools. There are no recurring fees or subscription charges.
Disclaimer of Warranties
X2Y dev Tools is provided without warranty of any kind. We make no guarantees about the accuracy, reliability, or suitability of our tools for any particular purpose. Use our services at your own risk.
Limitation of Liability
To the maximum extent permitted by law, X2Y dev Tools and its operators shall not be liable for any indirect, incidental, special, consequential, or punitive damages resulting from your use of our services.
Continuous Improvement
New Tools: We're constantly adding new tools and features to X2Y Dev Tools. Account holders receive email updates about new releases.
Feedback and Requests: We welcome your feedback, bug reports, and tool requests. Please send them to support@x2ydevs.xyz
Tool Accuracy and Limitations
Educational Tools: Our mathematics, chemistry, and physics tools are provided for educational and reference purposes. While we maintain high accuracy standards:
- Calculations use standard formulas but may not cover all advanced scenarios
- Molecular orbital theory calculations are simplified for educational understanding
- Physics calculations assume idealized conditions
- Mathematical solvers work best with standard polynomial expressions
- Floating-point arithmetic may introduce minor rounding errors
User Responsibility: You are responsible for verifying all results before using them in academic work, professional applications, or critical decisions. We recommend cross-checking with authoritative sources such as textbooks, professional software, or qualified instructors.
No Warranty: We make no guarantees about the accuracy, completeness, or suitability of calculation results for any specific purpose. Use all tools at your own risk.
Contact Information
For questions about these Terms of Use, feedback, bug reports, or new tool requests, please contact us at support@x2ydevs.xyz