Privacy

What runs in your browser

Every calculator on this site runs entirely in your browser. The numbers you enter — loan amounts, down payments, interest rates, QR code contents, network check inputs — never leave your device. No form data is sent to our servers.

Analytics and advertising

We use third-party analytics and advertising services to understand which tools are useful and to keep the site free to use:

• Google Analytics 4 — aggregate page-view and engagement reporting.
• Google AdSense — contextual ads. Ads are personalized only if you've consented through Google's ad settings.
• Cloudflare Web Analytics — lightweight privacy- focused page-view counting.
• Microsoft Clarity — anonymized usability insights (aggregated heatmaps, session sampling).

These services set their own cookies and may log technical details like your IP address, browser, and referring page. They operate under their own privacy policies.

Your choices

You can disable analytics cookies through your browser settings or a privacy extension. You can manage Google ad personalization at adssettings.google.com. Blocking these services does not affect any tool's functionality — the calculators work the same either way.

No accounts, no stored inputs

There is no sign-up, no login, and no user account system on this site. We don't store the inputs you enter into calculators, and we don't have a database of visitor actions you took on individual tools.

Contact form

The contact page uses an embedded Google Form for feedback, corrections, tool requests, and privacy questions. Anything you submit through that form is sent to Google and stored on Google's infrastructure on our behalf, and is subject to Google's privacy terms in addition to this policy. If you prefer not to submit information through Google, please don't use the form.