Privacy Policy
This privacy policy explains what information Terbit Calculator collects, how it is used, and your choices regarding cookies, analytics, and advertising.
Information We Collect
Terbit Calculator collects minimal information necessary to provide our services. When you use our calculators without an account, we collect only anonymous usage data including pages visited, calculators used, and general geographic region for analytics purposes. When you create an account, we collect your email address and display name. When you save calculations, we store the inputs and results you choose to save. We do not collect sensitive personal information such as financial account numbers, social security numbers, medical records, or precise location data.
How We Use Your Information
Anonymous usage data helps us understand which calculators are most popular, identify technical issues, and prioritize improvements. Account information is used solely for authentication and communication about your account. Saved calculations are stored to provide you with history and sharing functionality. We may send occasional emails about new features or important updates, but you can unsubscribe at any time. We do not use your calculation inputs or results for any purpose other than providing the service you requested. We do not build profiles based on your calculations or sell insights derived from user data.
Data Storage and Security
All data is stored on secure servers with encryption at rest and in transit. We use industry-standard security practices including HTTPS encryption for all communications, secure password hashing, and regular security audits. Access to user data is restricted to authorized personnel who need it to maintain the service. We retain account data as long as your account is active. Anonymous analytics data is aggregated and cannot be traced back to individual users. You can request deletion of your account and all associated data at any time through your account settings or by contacting us.
Cookies and Tracking
We use essential cookies to maintain your session and preferences. Analytics cookies help us understand how visitors use our site so we can improve the experience. We use Google Analytics for aggregate traffic analysis. We display advertisements through Google AdSense, which may use cookies to serve relevant ads based on your browsing history across the web. You can manage cookie preferences through your browser settings. Disabling cookies may affect some functionality like saved preferences and login persistence, but calculators will continue to function normally without cookies.
Third-Party Services
We use limited third-party services to operate our platform. Google Analytics provides aggregate traffic insights. Google AdSense displays advertisements. Authentication services may be used for social login options. These services have their own privacy policies governing their data practices. We do not share personally identifiable information with advertisers. Ad targeting is managed by Google based on their own data and your browser settings, not on information we provide about your calculator usage. We carefully evaluate third-party services for privacy compliance before integration.
Your Rights and Choices
You have the right to access, correct, or delete your personal data at any time. You can export your saved calculations in standard formats. You can delete your account, which removes all associated personal data from our systems. You can opt out of non-essential communications. You can use our calculators without creating an account if you prefer not to store any data. For users in jurisdictions with specific data protection regulations, we comply with applicable laws including data portability, right to erasure, and consent requirements. Contact us through our contact page to exercise any of these rights.
Changes to This Policy
We may update this privacy policy periodically to reflect changes in our practices, technology, or legal requirements. Significant changes will be communicated through a notice on our website or via email to registered users. The effective date at the top of this policy indicates when it was last updated. We encourage you to review this policy periodically. Continued use of our services after changes constitutes acceptance of the updated policy. If you disagree with any changes, you may delete your account and discontinue use of our services.