FAQ

Yes — every calculator is free forever. Sign up (free) to save history, mark favorites, and start a 30-day AI trial. Paid plans add daily-refill AI credits, ad-free browsing, and PDF/Excel export.

Our calculators use industry-standard formulas. Financial calculators assume standard compounding conventions. Always consult a professional for important financial decisions.

AI credits let you ask our AI assistant to explain your calculation results. New accounts get 30 analyses on a 30-day trial; paid plans refill 100–2000 credits daily.

CSV export and share links are available to everyone. PDF and Excel export require a Basic plan or higher.

Calculation inputs are sent to our server for computation and discarded — we don't log them. Free users can keep their last 3 calculations saved; Basic and above get unlimited history. Guests use localStorage, which stays on the device.