Calculator - Unit & Currency

Tired of jumping between a calculator, a unit converter, and a currency app? Keep the everyday tools you actually use in one clean app.

Built for homework, quick estimates, travel conversion, unit switching, BMI checks, and small work calculations when you just need an answer fast. Clear categories, no learning curve—open and go.

Scientific calculator
• Everyday arithmetic plus common scientific functions, with DEG / RAD modes
• Calculation history so you can revisit recent results
• Very large or very small values automatically switch to scientific notation
• Percentage calculation mode can be changed in settings
• Optional vibration feedback
• Spoken results are available in the Chinese UI (toggle in settings)

Unit converter
Convert common units for length, area, volume, mass, temperature, speed, pressure, power, fuel consumption, and more. Handy for schoolwork, product specs, and day-to-day comparisons.

Currency converter
Convert between multiple currencies using reference rates—useful for travel, shopping abroad, and rough foreign-currency estimates. Rates update when online and are for reference only; they are not live bank trade prices.

BMI calculator
Enter height and weight to view BMI. Chinese UI uses the Chinese standard; other language UIs use the WHO standard.

More everyday tools
• Number base converter: binary / octal / decimal / hexadecimal
• Compass for everyday direction (requires a magnetometer)
• Percentage mode options in settings

Why you’ll like it
• Simple home layout: Calculator, Unit Conversion, Toolbox, and Settings
• Switch between scientific and standard keypads
• Optional one-time in-app purchase to remove ads, with Restore purchases (not a subscription)

Great for students, professionals, travelers, and anyone who needs quick calculations on the go.

Recent changes:
1 fix some bugs