CalcStep

Privacy Policy

Last Updated: Build Year 2026•Effective Date: Evergreen

At CalcStep (accessible from https://calcstep.pages.dev), we prioritize the privacy of our visitors. This Privacy Policy document outlines the types of information that are collected and recorded by CalcStep and how we use it.

1. 100% Static Architecture & No User Accounts

CalcStep is a 100% static client-side web application. We do not maintain user databases, require registration or logins, collect personal names or passwords, or execute server-side data collection routines. All mathematical calculations occur entirely within your local browser session.

2. Local Storage and Client-Side State

To improve user experience, CalcStep utilizes your browser's native localStorage to store:

  • Recent Calculation History: Your recent inputs and outputs for specific tools are saved locally so you can review recent calculations. This data never leaves your device and can be permanently erased at any time using the "Clear history" button inside each calculator.
  • Privacy & Cookie Choices: Your advertising cookie consent preferences are stored in localStorage under the key calcstep_ads_consent.

3. Third-Party Advertising and Cookies (Adsterra Compliance)

To maintain CalcStep as a free educational resource without subscription fees, we may partner with third-party advertising networks, including Adsterra.

Third-party ad vendors and networks use technologies like cookies, JavaScript, and device identifiers in their respective advertisements and links that appear on our site. These technologies are utilized for:

  • Frequency Capping: Ensuring you do not repeatedly see the identical advertisement.
  • Ad Performance & Fraud Prevention: Measuring advertising campaign effectiveness and detecting invalid bot traffic.
  • Ad Personalization: Delivering relevant advertisements based on visits to this and other websites across the Internet.

4. How to Opt Out of Advertising Cookies

You have full control over your advertising choices on CalcStep:

  1. On-Site Privacy Choices: You can click the "Privacy Choices" link in the footer of any page at any time to open the privacy settings modal and select "Opt Out / Do Not Sell". When opted out, our website blocks third-party advertising scripts from loading.
  2. Browser Settings: You can choose to disable cookies through your individual browser settings. Detailed information about cookie management with specific web browsers can be found at the browsers' respective websites.
  3. Industry Opt-Out Platforms: You may also opt out of personalized advertising across multiple networks through the Digital Advertising Alliance (DAA) at aboutads.info or the Network Advertising Initiative (NAI) at networkadvertising.org.

5. Children's Information (COPPA)

Protecting the online privacy of young children is especially important to us. CalcStep does not knowingly collect any Personal Identifiable Information from children under the age of 13. If you believe that a child has provided personal information on our website, please contact us immediately at devcraft.official@proton.me, and we will promptly remove such information.

6. Consent

By using our website, you hereby consent to our Privacy Policy and agree to its terms.