Privacy Policy

1. Information We Collect

1.1 Information You Provide

• Account Information: If you create an account, we collect your email address and any profile information you choose to provide.
• Saved Calculations: If you choose to save calculations to your account, we store this data to provide you with calculation history.
• Contact Information: When you contact us through our contact form, we collect your name, email, and message content.
• Feedback: Any feedback, suggestions, or feature requests you submit.

1.2 Information Collected Automatically

• Usage Data: Pages visited, calculators used, time spent on site, and navigation patterns.
• Device Information: Browser type, operating system, device type, and screen resolution.
• IP Address: Used for security, fraud prevention, and general geographic analytics.
• Cookies: We use cookies for site functionality, preferences, and analytics.

1.3 Calculator Data

• Functional cookies accepted (EU/GDPR regions): Recent calculation inputs and results are stored in localStorage under the prefixes calc_save_ and calculationHistory_. This data persists across browser sessions until you clear it or revoke consent.
• Functional cookies declined (EU/GDPR regions): Calculations are stored only in sessionStorage, which is automatically erased when you close the tab and is never written to disk.
• Non-GDPR regions (e.g. USA): localStorage is used by default to provide a seamless experience. You can still clear this data via your browser settings at any time.
• Consent revocation: If you withdraw Functional consent, any existing localStorage calculation data is immediately purged from your device.

2. How We Use Your Information

• Providing Services: To operate and maintain CalculatorApp.me and provide calculator functionality.
• Account Management: To create and manage your account, provide calculation history, and personalize your experience.
• Communication: To respond to your inquiries, provide support, and send important updates about our service.
• Analytics: To understand how users interact with our platform, identify popular calculators, and improve our services.
• Security: To detect and prevent fraud, abuse, and security threats.
• Legal Compliance: To comply with applicable laws, regulations, and legal processes.

3. Information Sharing

We do NOT sell, rent, or trade your personal information to third parties. We may share information only in the following circumstances:

• Service Providers: With trusted third-party service providers who assist in operating our platform under strict confidentiality agreements.
• Legal Requirements: When required by law, subpoena, or legal process.
• Business Transfers: In connection with a merger, acquisition, or sale of assets.
• With Your Consent: When you have given explicit permission for a specific purpose.

4. Data Security

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

• HTTPS encryption for all data transmission
• Secure database storage with access controls
• Regular security audits and updates
• Two-factor authentication option for accounts

5. Cookies and Tracking Technologies

• Essential Cookies: Enable core site functionality and security features. Always active.
• Preference / Functional Cookies: Remember your settings and preferences (currency, units, theme). When accepted, also enables localStorage for saving calculation inputs between sessions (keys: calc_save_*, calculationHistory_*).
• Analytics Cookies: Understand how you use our site to improve our services (Google Analytics, aggregated only).
• Advertising Cookies: We use Google AdSense to display advertisements. Google and other third-party vendors use cookies (including Google's advertising and DoubleClick cookies) to serve ads based on your prior visits to this and other websites. Non-essential advertising cookies are only set after you consent via our cookie banner.

You can manage your cookie preferences at any time using the cookie banner at the bottom of the page, or through your browser settings.

6. Your Rights

Depending on your location, you may have the following rights:

• Access: Request a copy of the personal information we hold about you.
• Correction: Request correction of inaccurate or incomplete information.
• Deletion: Request deletion of your personal information (subject to legal requirements).
• Data Portability: Receive your data in a structured, machine-readable format.
• Opt-Out: Opt out of marketing communications at any time.

To exercise these rights, contact us at privacy@calculatorapp.me.

7. California Privacy Rights (CCPA)

California residents have additional rights under the California Consumer Privacy Act (CCPA):

• Right to know what personal information is collected and how it is used
• Right to delete personal information
• Right to opt-out of the sale of personal information (we do not sell personal information)
• Right to non-discrimination for exercising privacy rights

8. International Users (GDPR)

If you are located in the European Economic Area (EEA), United Kingdom, or other regions with data protection laws, you have additional rights including:

• Right to lodge a complaint with a supervisory authority
• Right to restrict processing
• Right to object to processing

Our legal basis for processing includes consent, contract performance, and legitimate interests.

9. Children's Privacy

CalculatorApp.me is not intended for children under 13. We do not knowingly collect personal information from children under 13. If we learn that we have collected information from a child under 13, we will delete it promptly.

10. Data Retention

• Account Data: Retained while your account is active, plus 30 days after deletion request.
• Calculation History: Retained until you delete it or close your account.
• Analytics Data: Aggregated and anonymized data may be retained indefinitely.

11. Third-Party Links

Our website may contain links to third-party websites. We are not responsible for the privacy practices of these external sites. We encourage you to review their privacy policies.

12. Changes to This Policy

We may update this Privacy Policy periodically. We will notify you of material changes by posting a notice on our website or sending an email to registered users. Your continued use after changes constitutes acceptance of the updated policy.

13. Contact Us

CalculatorApp.me uses Google's Reader Revenue Manager (including Subscribe with Google) to offer optional newsletter sign-ups, contributions, and subscriptions. When you interact with one of these prompts:

• Google may collect and process the personal information you provide (such as your name, email address, and account details) and any payment information, acting as an independent data controller for that activity.
• Payments are processed by Google, not by CalculatorApp.me. We do not collect, see, or store your full payment card details.
• Google shares with us limited information about your subscription or contribution status so we can deliver the benefits you signed up for.

Google's handling of this data is governed by the Google Privacy Policy. Please review it to understand how Google processes your information when you subscribe or contribute.