Frequently Asked Questions

Last updated: Oct 6, 2025

• Is this free?

  Yes, all tools are free to use.

• Can I suggest a tool?

  Yes, use the contact form to suggest new tools.

• How accurate are the calculators?

  They are approximate and for educational purposes.

• Can I opt out of FX rates?

  Yes, disable related features in preferences.

• Is my data private?

  Yes, most tools run entirely in your browser. We do not store your input data.

• Can I use tools offline?

  Yes, this is a PWA. You can install it and use most tools without internet.

• How do I install the app?

  Look for the "Install" button in your browser address bar or "Add to Home Screen" in the menu.