G Calc Pro

G Calc Pro is a feature-rich, beautifully designed calculator app for iOS and macOS, built entirely with SwiftUI. It goes far beyond basic arithmetic, offering 7 calculator modes, 24 specialized professional tools across 5 industry categories, and a built-in formula library covering 6 academic disciplines. Calculator Modes Standard — Basic arithmetic operations Scientific — Trigonometric functions, logarithms, powers Programmer — HEX / BIN / OCT number system conversions Student — Quick access to math formula templates Finance — PMT, PV, FV, ROI financial calculations Statistics — Statistical analysis and regression Unit — Unit conversions Professional Module Toolbox (24 tools in 5 categories) Finance & Business — Loan Calculator, Investment ROI, Currency Converter (10 currencies), Tax Calculator, Compound Interest, Tip & Split Health & Medical — BMI Calculator, BMR/TDEE, Drug Dosage (weight & BSA-based), Due Date (pregnancy), eGFR Kidney Function (CKD-EPI 2021) Engineering & Construction — Advanced Unit Converter, Area & Volume (5 shapes), Material Estimator, Slope Calculator, Ohm's Law Real Estate — Mortgage Calculator, Rental Yield, Transaction Costs (Chinese market) Daily Life — Date Calculator, Age Calculator, Fuel Cost, Discount Calculator, Price Comparison Formula Library Built-in formula templates across 6 categories: Algebra, Geometry, Trigonometry, Finance, Statistics, and Physics — with LaTeX rendering, variable hints, and one-tap usage. Additional Features History & Favorites — Save, search, and revisit past calculations; bookmark important results 5 Dark Themes + Light Mode — Dark Navy, Midnight Black, Ocean Blue, Forest Green, Sunset Purple iCloud Sync — Sync history and favorites across devices (Pro) Sound Effects & Haptic Feedback — Configurable tactile and audio interaction Bilingual — Full Chinese and English localization Pro Upgrade — One-time purchase unlocks all professional modules, unlimited history, premium themes, and iCloud sync