Guilai Calculator

See every step of your calculation clearly. Guilai Calculator handles standard and scientific calculations and shows the result live as you type. Your expression stays below the result, and you can tap any history entry to keep calculating. • Standard and scientific: arithmetic, parentheses, percent, square, square root and common trig functions. • Easy history: keeps your last 200 calculations; tap one to recall its expression and result. • Handy controls: swipe the result to delete a digit, hold Delete to clear the expression; type with your keyboard on Mac. • Five themes: pair with light, dark or system appearance. • Spoken keys: optional Chinese or English voice, with the result read aloud when you tap equals. • Native design: for iPhone, iPad, Mac and Apple Watch, with Liquid Glass and haptic feedback on supported devices. No account required. No ads or third-party analytics. History and settings stay on the current device, with no cross-device sync. Speech uses the system's built-in speech synthesis. Requires iOS 26, macOS 26 or watchOS 26 or later.