Terms of Service

1. Acceptance of Terms

By accessing and using this service (the "Service"), you accept and agree to be bound by the terms and provision of this agreement. If you do not agree to abide by the above, please do not use this service.

2. Description of Service

LOS Analyzer is a software tool that provides preliminary line-of-sight screening for proposed structures near airports. The Service analyzes preliminary building geometry, tower positions, and runway data using 2D computational geometry to estimate obstruction or clear line of sight.

Critical Limitation: The Service produces preliminary screening results only. It is not a substitute for licensed engineering review, FAA regulatory submission, FAA Form 7460-1 filing, or any final design or life-safety decision. Users bear sole responsibility for engaging a Professional Engineer (PE) licensed in their jurisdiction and for submitting required notices to the Federal Aviation Administration (FAA) where applicable.

The Service is provided on an as-available basis. We make no warranty regarding the availability, accuracy, or completeness of any results.

3. Account Registration

To use certain features of the Service, you may be required to register for an account. You agree to provide accurate, current, and complete information during registration. You are responsible for maintaining the confidentiality of your password and account information.

By creating an account, you agree to our Privacy Policy, which governs our collection and use of your data.

4. Acceptable Use

You agree not to use the Service for any unlawful purpose or in any way that could harm, disable, or impair the Service. Prohibited conduct includes:

• Reverse engineering, decompiling, or attempting to derive the underlying algorithms or methodologies
• Scraping, crawling, or automated extraction of data from the Service
• Circumventing rate limits, security measures, or authentication mechanisms
• Using the Service's output as authoritative for FAA Form 7460-1 submissions, FAA aeronautical studies, OE/AAA submissions, building permits, life-safety analysis, or any final regulatory decision without professional engineering review and submission through official FAA channels
• Uploading or transmitting malware, viruses, or any malicious code
• Harassing, threatening, or abusing other users

We reserve the right to suspend or terminate your account if you violate these terms.

5. Payment Terms

Payment is processed securely through Stripe. The Service offers the following pricing tiers:

• Single Analysis: $499 per report (one-time)
• 5-Pack: $1,899 for 5 analyses (one-time, non-transferable credits)
• Annual Seat: $8,400 per seat per year (unlimited analyses)

Credits are non-refundable after a report has been generated. Credits do not expire unless otherwise stated at time of purchase. Seat subscriptions renew annually unless cancelled prior to the renewal date.

Refunds for unused credits are available within [TBD] days of purchase if no analysis has been completed. After an analysis is generated, the corresponding credit or payment is non-refundable.

We reserve the right to modify pricing with 30 days' notice. Price changes will not affect existing active subscriptions until the next renewal date.

6. Termination

You may terminate your account at any time by contacting support or deleting your account through the Service. Upon termination, you lose access to the Service and any saved projects or analyses.

We may terminate or suspend your account immediately if you violate these Terms or engage in conduct that we believe is illegal or harmful.

7. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SERVICE AND ITS OPERATORS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING BUT NOT LIMITED TO LOSS OF PROFITS, LOSS OF DATA, OR BUSINESS INTERRUPTION, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

The total liability of the Service provider (and its officers, directors, employees, agents, and affiliates) arising out of or related to these Terms, your use of the Service, or any analyses provided shall not exceed the greater of: (a) $100 USD, or (b) the total amount you have paid for the Service in the 12 months preceding the claim.

Some jurisdictions do not allow the limitation or exclusion of liability, so some of the above limitations may not apply to you. In such cases, liability is limited to the extent permitted by law.

8. Indemnification

You agree to indemnify, defend, and hold harmless the Service provider and its officers, directors, employees, agents, and affiliates from any and all third-party claims, damages, losses, costs, and expenses (including reasonable attorneys' fees) arising out of or related to: (a) your use of the Service; (b) your violation of these Terms; (c) your infringement of any third-party intellectual property, privacy, or other rights; or (d) your use of the Service's output in any manner that violates applicable law, including but not limited to FAA regulations.

9. Governing Law

These Terms shall be governed by and construed in accordance with the laws of [U.S. state of LLC formation — see BUILD_LOG.md], without regard to its conflict of law provisions.

10. Arbitration and Dispute Resolution

Any dispute arising out of or related to these Terms, your use of the Service, or any analyses shall be resolved by mandatory binding individual arbitration, not by lawsuit or class action.

Arbitration shall be conducted under the American Arbitration Association (AAA) Commercial Arbitration Rules. The arbitrator shall be a single neutral arbitrator mutually selected by the parties. The arbitration shall take place in the state or territory where you reside, or in the state where the Service provider's principal place of business is located, as determined by AAA rules.

Each party shall bear its own attorneys' fees and costs, except that the Service provider will pay all AAA fees if the arbitrator determines that your claim is meritorious.

11. Disclaimer of Warranties

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED.

We expressly disclaim all warranties, including but not limited to:

• Merchantability
• Fitness for a particular purpose
• Non-infringement
• Accuracy, completeness, or reliability of any analysis
• Uninterrupted or error-free operation

We make no warranty that the Service will meet your requirements, be suitable for your purposes, or be error-free. The use and results obtained from the Service are entirely at your own risk.

12. Changes to Terms

We may modify these Terms at any time by posting the revised Terms on the Service and updating the "Last updated" date. Material changes will be communicated via email to your registered account address at least 30 days prior to taking effect.

Your continued use of the Service after such notice constitutes acceptance of the revised Terms. If you do not agree to the revised Terms, your sole remedy is to discontinue use of the Service.