G Calc Pro

Why CalcPro?

The system calculator is too basic; specialized tools are too scattered. **CalcPro** puts “enough” and “professional” in one app: from discount math to loan payments, BMI to clinical scores, unit conversion to engineering formulas — you only need CalcPro.

Calculate once, use everywhere

History and favorites sync via iCloud across all your Apple devices. What you compute on iPhone is ready on Mac; analysis you do on iPad is there on your phone.

Professional modules for everyone

- Finance & business: Loans/mortgages, ROI, currency conversion, tax, compound interest, tip splitting

- Health & medical: BMI, BMR, drug dosing, clinical scores, due date, eGFR

- Engineering & construction: 3000+ unit conversions, dimensions/area/volume, material estimates, slope, electrical formulas

- Real estate: Mortgage, rental yield, transaction costs, property appreciation

- Daily life: Date/age, fuel economy, discounts, unit price comparison

Optimized for every device

- iPhone: Widgets, Dynamic Island, haptics, Siri Shortcuts

- iPad: Split View, landscape two-column layout, Apple Pencil notes, keyboard shortcuts

- Mac: Menu bar mini calculator, full keyboard shortcuts, resizable window and full screen

The free version includes standard/scientific calculator, history (last 50 entries), favorites, and basic unit conversion; upgrade to Pro for all modules and unlimited history.

CalcPro — Your all-in-one calculator.