Privacy Policy
Effective Date: March 21, 2026
Your privacy is important to us. This policy explains what we collect, what we don't, and how your data is protected.
1. Your Calculations Are Private
Every calculation you perform — BMI, Mortgage, Scientific, Freelancer fees, and all other tools — runs entirely inside your browser using JavaScript. No calculation inputs or results are ever sent to our servers. Your numbers stay on your device.
2. Account Registration
Some tools require a free account. When you sign up:
- We only collect your email address.
- We never see your password. Passwords are handled entirely by Google Firebase Authentication — encrypted by Google, inaccessible to us, impossible for us to read or recover.
- A verification email is sent by Firebase to confirm your address and prevent fake accounts.
- Password resets go directly through Firebase — we are never involved.
3. What We Do NOT Collect
- Your name, phone number, or address
- Your calculation inputs or results
- Your password — technically impossible by design
- Any payment information — this site is completely free
4. Local Storage (On Your Device Only)
We use your browser's localStorage to remember your preferences. This data never leaves your device:
- Dark/light theme preference
- Sound on/off setting
- Free calculation count per tool (clears when you sign in)
- Monthly tracker data in the Freelancer Calculator
5. Third-Party Services
- Google Analytics: Anonymous usage statistics to help us improve the tools. No personally identifiable information is shared.
- Google AdSense: May display relevant ads. You can opt out via Google's ad settings.
- Google Firebase: Handles account authentication and stores your email securely. Subject to Google's Privacy Policy.
- exchangerate-api.com: The Freelancer Calculator fetches live USD/PKR rates. No personal data is sent to this service.
6. Data Security
All Firebase connections use HTTPS encryption. Access to any stored account data is restricted to the site administrator only. No user can access another user's information.
7. Your Rights & Data Deletion
You can request deletion of your account and email from our system at any time. We will action this within 48 hours.
8. Children's Privacy
This service is not intended for children under 13. Contact us immediately if you believe a child has registered an account.
9. Contact Us
Email: [email protected]
We respond within 48 hours.