ballistics.foo

Introduction

Welcome to ballistics.foo ("we," "our," or "us"). We are committed to protecting your privacy and being transparent about the data we collect. This privacy policy explains how we collect, use, and protect information when you use our web-based ballistics calculator playground.

1. Information We Collect

1.1 Analytics Data (Google Analytics)

We use Google Analytics to understand how visitors use our site. This service collects:

• Usage data: Pages visited, time spent, features used
• Device information: Browser type, operating system, screen resolution
• Geographic data: Country and city (approximate location based on IP address)
• Referral information: How you found our site (search engines, direct links, etc.)
• Session data: Unique session IDs, timestamp of visits

1.2 Ballistics Calculation Data

Important: All ballistics calculations run entirely in your browser using WebAssembly. We do NOT:

• Transmit your ballistics data to our servers
• Store your calculation inputs or results
• Track what bullets, velocities, or trajectories you calculate
• Have access to your custom code examples

Your ballistics data stays on your device and is not shared with us or any third parties.

1.3 Technical Data

We collect minimal technical data necessary for the site to function:

• Server logs: IP addresses, timestamps, requested URLs (retained for 7 days for security purposes)
• Error reports: If the WASM module crashes, basic error information may be logged (no user data included)

2. How We Use Your Information

We use the collected data exclusively for:

• Site improvement: Understanding which features are popular and which need work
• Performance optimization: Identifying slow pages or features
• Bug detection: Finding and fixing technical issues
• Usage statistics: General metrics like daily visitors and popular programming languages
• Security: Detecting and preventing abuse or attacks

We do NOT use your data for:

• Advertising or marketing
• Selling to third parties
• Building user profiles
• Cross-site tracking

3. Third-Party Services

3.1 Google Analytics

Google Analytics is a web analytics service provided by Google LLC. Google uses the collected data to track and examine the use of this site, prepare reports on its activities, and share them with other Google services.

Google may use the data to contextualize and personalize ads within its own advertising network.

Privacy Policy: https://policies.google.com/privacy

Opt-out: Google Analytics Opt-out Browser Add-on

3.2 Amazon Associates Program (Affiliate Links)

ballistics.foo is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.

What this means for you:

• Product prices are exactly the same whether you use our affiliate links or not
• We only recommend products we believe are useful to our users
• You are never obligated to purchase anything through our links
• Your privacy is protected - Amazon handles all transaction data according to their privacy policy
• Affiliate links are clearly identifiable (they contain "tag=" in the URL or redirect through "amzn.to")

Amazon Privacy Policy: https://www.amazon.com/gp/help/customer/display.html?nodeId=468496

3.3 Content Delivery Networks (CDNs)

We load certain libraries from public CDNs to improve performance:

• jsDelivr: Ruby and PHP WASM runtimes
• Pyodide CDN: Python runtime and scientific libraries
• Monaco Editor: Code editor component

These CDNs may collect basic usage data as described in their respective privacy policies.

3.4 Open Source Libraries

This site uses the following open-source projects:

• Ballistics Engine: WASM ballistics calculator (MIT OR Apache-2.0 License)
• Pyodide: Python runtime in WebAssembly
• ruby.wasm: Ruby runtime in WebAssembly
• php-wasm: PHP runtime in WebAssembly
• Monaco Editor: VS Code editor component

4. Cookies and Local Storage

4.1 Cookies

We use cookies only for Google Analytics. These cookies track:

4.2 Browser Local Storage

We may use browser localStorage to cache:

• WASM modules for faster loading on repeat visits
• Code editor preferences (theme, font size)
• Last used programming language selection

This data never leaves your browser and can be cleared at any time through your browser settings.

5. Data Security

We implement industry-standard security measures:

• HTTPS encryption: All traffic is encrypted in transit
• Minimal data collection: We only collect what's necessary for analytics
• No user accounts: No passwords or personal information to protect
• Client-side computation: All calculations run in your browser
• Regular updates: Dependencies and libraries kept up to date

6. Your Rights and Choices

6.1 Opt-Out of Analytics

You can opt out of Google Analytics by:

• Installing the Google Analytics Opt-out Browser Add-on
• Using browser privacy/incognito mode
• Blocking analytics scripts with browser extensions (uBlock Origin, Privacy Badger, etc.)
• Disabling JavaScript (site will not function)

6.2 Do Not Track

Our site respects "Do Not Track" (DNT) browser signals. When DNT is enabled, we disable Google Analytics.

6.3 Cookie Management

You can delete cookies at any time through your browser settings:

• Chrome: Settings → Privacy and Security → Cookies and other site data
• Firefox: Preferences → Privacy & Security → Cookies and Site Data
• Safari: Preferences → Privacy → Manage Website Data
• Edge: Settings → Privacy, search, and services → Cookies

6.4 Data Deletion

Since we don't store personal information or user accounts, there's no data to delete. Analytics data is anonymized and aggregated. If you want Google to delete your analytics data, contact Google directly through their privacy controls.

7. International Users and GDPR

This site is operated from the United States. If you're accessing from the European Union or other regions with data protection laws, please note:

• Legal basis for processing: Legitimate interest (improving our service)
• Data transfers: Data may be transferred to and processed in the United States
• GDPR rights: EU users have the right to access, rectify, erase, restrict, and port their data
• Consent: By using this site, you consent to this privacy policy

To exercise your GDPR rights or ask questions, contact us at the email below.

8. Children's Privacy

This site is not directed at children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us immediately.

9. Changes to This Privacy Policy

We may update this privacy policy from time to time. Changes will be posted on this page with an updated "Last Updated" date. Continued use of the site after changes constitutes acceptance of the updated policy.

Major changes will be highlighted with a notice on the main page.

10. Contact Us

If you have questions about this privacy policy or our data practices, please contact:

Summary