Privacy Policy

1. Introduction

CalculatorZone.co.uk (“we,” “us,” or “our”) operates the CalculatorZone website and mobile services. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you visit our website and use our calculators.

We aim to explain our data practices clearly. This page is an operational summary, not legal advice; the site owner should obtain legal review for the jurisdictions in which the service is offered.

2. What Data We Collect

2.1 Information You Provide Directly

• Contact Forms: If you contact us, we collect your name, email address, and message content.
• Feedback: We collect any feedback, comments, or suggestions you provide.

2.2 Information Collected Automatically

• Browser & Device Data: IP address, browser type, operating system, device type.
• Usage Data: Pages visited, time spent, referring website, links clicked.
• Cookie Data: Information stored in cookies (see section 5).
• Location Data: Approximate geographic location based on IP address.

2.3 Calculator Input Data

Important: Free-calculator inputs are processed entirely in your browser and are not stored on our servers. If you choose Save on device, the selected scenario is stored only in that browser until you remove it or clear browser storage. The separately described, optional paid-report flow is currently disabled.

3. How We Use Your Data

We use collected information for the following purposes:

• Service Improvement: To understand user behavior and improve calculator accuracy and functionality.
• Local improvement signals: To observe allowlisted, non-identifying interactions in the browser. No external analytics collector is currently connected.
• Advertising: To deliver targeted advertisements through Google AdSense (see section 3.1).
• Communication: To respond to your inquiries and send important notices.
• Legal Compliance: To comply with legal obligations and protect against fraud.
• Security: To monitor and prevent security issues and misuse of the service.

3.1 Google AdSense & Advertising

CalculatorZone displays advertisements through Google AdSense. Google may collect and use your data to:

• Build a profile of your interests and browsing behavior.
• Serve personalized advertisements based on your activity across websites.
• Measure advertising performance and campaign effectiveness.

Google's Data Use: Google processes data as an independent data controller under its own privacy policy. You can view Google's privacy practices at policies.google.com/privacy and manage your ad preferences at myaccount.google.com/ads.

4. Third-Party Services & Data Sharing

We use the following third-party services:

4.1 Content Delivery Network (Cloudflare CDN)

We use Cloudflare to deliver website content quickly and securely. Cloudflare may collect IP addresses and usage data. View Cloudflare's privacy policy at cloudflare.com/privacypolicy.

4.2 Site measurement

The site currently uses a browser-local event bus that does not send requests, set analytics cookies, store identifiers, or include calculator inputs and results. No Google Analytics or other external analytics collector is currently enabled. The analytics preference is retained so a separately approved, consent-aware integration can be added later without changing the choice presented to visitors.

4.3 Google AdSense

Our advertising partner. See section 3.1 for details.

4.4 Data Sharing Policy

We do NOT sell or rent your personal data to third parties. We only share data with service providers who:

• Are contractually bound to protect your data.
• Only use data for the purposes we specify.
• Comply with GDPR and applicable regulations.

5. Cookies & Tracking Technologies

We use cookies and similar technologies to enhance your experience. For detailed information and cookie management, see our Cookies Policy.

5.1 Cookie Types

• Essential: Necessary for website functionality (session, security, preferences).
• Analytics: Reserved for a future consent-aware service; no external analytics cookie is currently set by CalculatorZone.
• Advertising: Google AdSense cookies for ad personalization.
• Performance: Cloudflare and other service provider cookies.

5.2 Managing Cookies

You can control cookies through your browser settings. Most browsers allow you to refuse cookies or alert you when cookies are being sent. However, blocking all cookies may affect website functionality. See your browser's help section for specific instructions.

6. Calculator Input Data & Processing

✓ Your calculator inputs are NOT stored on our servers

6.1 How Calculator Processing Works

• All calculations are performed in your browser using JavaScript.
• Numbers you enter are processed locally on your device.
• Results are generated on your device and not transmitted to our servers.
• No calculator value is sent to or stored by our servers. If you choose Save on device, the scenario is retained only in your browser's local storage until you remove it or clear browser storage.
• The share control copies a general calculator page address only; it does not put input values or results in the link.

6.2 What Data IS Collected

The local measurement contract does not send calculator values, results or identifiers to an external collector. It records only allowlisted event names in the browser:

• Which calculator was accessed (not the inputs or results).
• How many times a calculator was used.
• General user engagement metrics.

6.3 Your Calculator Privacy

You can use the free calculators without sending the values you enter to our servers or third parties.

6.4 Optional paid reports

The paid-report feature is currently disabled. If it is enabled in a future release and you choose to purchase a report, the inputs required to create that report and the contact details you provide for checkout and delivery would be sent to the payment and delivery providers identified at checkout. That optional process does not apply to the free calculators.

7. Your Rights Under GDPR, CCPA & PIPEDA

Depending on your location, you have certain rights regarding your personal data:

7.1 GDPR Rights (EU/UK Residents)

• Right of Access: Request a copy of your personal data.
• Right to Rectification: Request correction of inaccurate data.
• Right to Erasure: Request deletion of your data (right to be forgotten).
• Right to Restrict Processing: Request we limit how we use your data.
• Right to Data Portability: Request your data in a portable format.
• Right to Object: Object to processing for marketing or analytics.
• Right to Withdraw Consent: Withdraw consent for data processing.

7.2 CCPA Rights (California Residents)

• Right to Know: Request what personal data we collect.
• Right to Delete: Request deletion of your personal data.
• Right to Opt-Out: Opt out of the sale or sharing of personal data.
• Right to Correct: Request correction of inaccurate data.
• Non-Discrimination: We will not discriminate for exercising these rights.

7.3 PIPEDA Rights (Canadian Residents)

• Right of Access: Request access to your personal information.
• Right to Correction: Request correction or amendment of your data.
• Right to Withdraw Consent: Withdraw consent for collection or use.
• Complaints: File complaints with the Privacy Commissioner of Canada.

7.4 Exercising Your Rights

To exercise any of these rights, contact us at [email protected] with:

• Your full name and email address.
• Description of the request (for example, “I request access to my data”).
• Proof of identity if required.

We will respond within 30 days (or as required by law). If we cannot comply, we will explain why.

8. Data Retention Periods

We retain personal data only as long as necessary:

After retention periods expire, data is securely deleted unless we're required by law to retain it longer.

9. Security of Your Data

We implement industry-standard security measures to protect your data:

• HTTPS/SSL: All data transmission is encrypted using SSL/TLS.
• CDN Protection: Cloudflare CDN provides DDoS protection and security.
• Server-side minimisation: Free-calculator values are not sent to or stored by CalculatorZone servers. A scenario saved on device stays only in that browser.
• Limited Collection: We only collect data necessary for our services.
• Access Controls: Only authorized personnel can access collected data.

While we take reasonable precautions, no internet transmission is completely secure. We cannot guarantee absolute security.

10. Contact Us

For privacy inquiries, data requests, or concerns, contact us:

Data Protection Authority

If you're in the UK/EU and have unresolved concerns, you can lodge a complaint with your local data protection authority:

• UK: Information Commissioner's Office (ICO) - ico.org.uk
• EU: Your local data protection authority
• Canada: Office of the Privacy Commissioner of Canada - priv.gc.ca