1. Scope of This Policy
This Privacy Policy applies to the web application hosted at scientificcalculatorapp.com ("the Service", "we", "us", or "our"). It describes what information is processed when you access and use our online scientific calculator, how that data is handled, and your choices regarding data sovereignty.
2. Information We Do NOT Collect
Unlike many web utilities, we are intentionally engineered to minimize data processing. In particular:
- No Computational Telemetry: We do not log or view the formulas, calculations, matrices, or variable values you enter.
- No Mandatory Accounts or Passwords: You do not need to register, provide an email address, or create credentials to use any feature of this calculator.
- No Location or Biometric Data: We do not request GPS location access, device sensors, camera, microphone, or biometric identification.
- No Behavioral Ad Profiling: We do not build commercial advertising profiles or sell consumer browsing habits to any third party.
3. How Browser Local Storage is Used
To provide an ergonomic experience akin to a physical hardware calculator that remembers your settings across sessions, our application utilizes standard browser localStorage. This data never leaves your computer:
| Storage Key | Purpose | Storage Location |
|---|---|---|
| scicalc_theme | Remembers chosen UI theme (dark/light) | Client-Side Only |
| scicalc_angle_mode | Stores preferred angle mode (DEG, RAD, or GRAD) | Client-Side Only |
| scicalc_notation | Stores selected notation (Western, Indian, Engineering) | Client-Side Only |
| scicalc_variables | Values assigned to registers A, B, C, D, E, F, X, Y, M | Client-Side Only |
| scicalc_history | Recent calculation expressions and answers for the ledger tape | Client-Side Only |
You can clear all stored preferences at any time by clicking "Clear History" in the app or clearing your browser's cookies and site data.
4. Edge Hosting & Technical Server Logs
When you visit scientificcalculatorapp.com, our content delivery network (CDN edge servers) automatically logs standard, transient HTTP request metadata. This may include your IP address, browser user-agent header, requested URL, and timestamp.
These logs are collected solely for legitimate technical security interests: detecting Distributed Denial of Service (DDoS) attacks, preventing malicious bot abuse, and diagnosing network infrastructure performance. These logs are automatically purged on a rolling cycle and are never correlated with calculation activity.
5. Voluntary Contact Inquiries
If you choose to submit feedback, report a mathematical bug, or send a message via our Contact Form, you provide your name, email address, and message content voluntarily. We use this information solely to review your communication and respond to your inquiry. We never share your contact information with marketers or spam lists.
6. Cookies Policy
ScientificCalculatorApp.com does not utilize third-party tracking cookies or advertising cookies. Any session tokens or caching mechanisms are strictly technical and required for the basic delivery of static HTML, CSS, JavaScript, and font assets.
7. Educational Environments & Minor Privacy (COPPA & FERPA)
Because our calculator is widely utilized in middle schools, high schools, universities, and computer laboratories, we uphold stringent compliance standards:
- We do not collect personal information from children under 13 in compliance with the Children’s Online Privacy Protection Act (COPPA).
- We do not record student educational records or academic performance data.
- Educators can safely direct students to use the application during lectures, homework, or laboratory exercises.
8. Your Rights Under GDPR & CCPA/CPRA
Depending on your jurisdiction (such as the European Economic Area, United Kingdom, or State of California), you hold legal privacy rights:
- Right of Erasure: You can completely erase any stored calculation data instantly by clicking "Clear History" or wiping your browser's local cache.
- Right of Access & Portability: All active calculation histories are directly copyable from the History Ledger.
- Non-Discrimination: We do not gate features behind data sharing agreements. All features remain open to everyone.
- Do Not Sell My Info: We do not sell, rent, or trade your personal information.
9. Data Security & Encryption
All network communication with scientificcalculatorapp.com is secured via end-to-end Transport Layer Security (TLS 1.3 / HTTPS). This guarantees that scripts, KaTeX stylesheets, and font packages are delivered without man-in-the-middle tampering.
10. Changes to This Privacy Policy
We may periodically update this policy to reflect new calculator features or regulatory requirements. Any modifications will be posted to this page with an updated revision date.
11. Contact Our Privacy Team
If you have questions, feedback, or privacy-related requests, please reach out to us directly: