Privacy Policy

DecideCalc is designed privacy-first. This page explains exactly what we do — and don't — collect.

No accounts, no login

DecideCalc has no user accounts. You never enter an email, phone number, or password to use any tool. There is no sign-up form.

Calculations stay in your browser

Every calculator runs entirely as client-side JavaScript. Your inputs (loan amounts, salary, dates, body measurements, etc.) and your results are never transmitted to our servers. We do not log, store, or read them.

Local storage

We store only your theme preference (light/dark mode) and other purely-local UI settings in your browser's localStorage. This data never leaves your device. You can clear it any time from your browser settings.

Service worker / PWA

If you install DecideCalc as a Progressive Web App, the browser caches the pages locally so the app works offline. This cache lives on your device and stores only static page assets, not your calculation inputs.

Analytics & advertising

DecideCalc may use a privacy-respecting analytics counter (anonymous page views) and, when enabled, Google AdSense. AdSense may use cookies to show relevant ads; you can opt out via Google's Ads Settings. We never share your calculator inputs with any third party, including advertisers.

External links

Some tools offer a "Share on WhatsApp" button. Clicking it opens WhatsApp with a pre-filled message you can review before sending. We do not transmit your data automatically.

Changes to this policy

If this policy changes, we will update this page and bump the "Last updated" date. Continued use of DecideCalc means you accept the updated policy.

Last updated: 2026-07-30