Privacy Policy

Overview

CalcStack (calcstack.techtools365.com) is operated by TechTools365. We are committed to protecting your privacy. This policy explains what data we collect and how we use it.

What We Collect

Calculator Inputs

All calculations happen entirely in your browser. We do not send your financial inputs (salary, loan amount, investment details) to any server. Your data never leaves your device.

Analytics

We use privacy-respecting analytics to understand which calculators are popular and how to improve them. This may include:

• Pages visited and time spent
• Country and general region (not precise location)
• Device type and browser
• Referral source

We do not track individual users across sessions or build personal profiles.

Cookies

We use minimal cookies:

• Essential cookies: Required for the site to function
• Analytics cookies: Help us understand site usage (can be blocked without affecting functionality)
• Advertising cookies: If display ads are shown, our ad partners may set cookies to serve relevant ads

Third-Party Services

We may use the following third-party services:

• Google Analytics / Ezoic: For site analytics and ad serving
• Cloudflare: For hosting and CDN
• Affiliate partners: When you click an affiliate link, the partner's site has its own privacy policy

Affiliate Links

Some pages contain affiliate links. When you click these links and make a purchase or sign up, we may earn a commission. Affiliate links are always marked with rel="nofollow sponsored" and disclosed on the page.

Data Retention

We do not store any personal financial data. Analytics data is retained for up to 26 months and then automatically deleted.

Your Rights

You have the right to:

• Block cookies through your browser settings
• Use an ad blocker (our calculators work fine with ad blockers)
• Request deletion of any data we may have about you

Contact

For privacy-related questions: contact@techtools365.com

Changes

We may update this policy occasionally. Changes will be posted on this page with an updated date.