Calculator

A simple calculator that gets out of your way.

Calculator is a clean, easy app made for the math you do every day — from splitting bills and calculating tax to checking homework and leaving a tip. Big buttons and a stylish, distraction-free design mean you get your answer in seconds, every time.

*Ads appear at the bottom of the screen. If you prefer an ad-free experience, you can remove them with a one-time in-app purchase.


Everyday calculations
• Basic arithmetic: +, −, ×, ÷ and percentage
• Constant calculation — tap = again to repeat your last operation
• Calculation history to review past results
• Multiple memory values — store and label them (MC, MR, M+, M−, MS); toggle on or off in Settings
• Keep app open to prevent your calculation from being interrupted
• Your last calculation is kept when you reopen the app

Display & input
• Scientific notation for very large or very small numbers
• Four number formats (1,234.5 / 1 234,5 / 1.234,5 / 1'234.5)
• See your full calculation on screen as you type
• Backspace — tap to erase the last digit; long-press to clear the current number
• Long-press the result to copy, paste, or share it
• Works in portrait and landscape

Math functions
• Square root (√), pi (π), square (x²), and reciprocal (1/x)
• Turn the function row on or off in Settings

Make it yours
• 3 keypad layouts: Standard, Stylish, Ergonomic
• 14 color themes, including a custom Material color
• Dark mode available
• Vibration on touch (on/off)
• Button tap sound: Off, Warm, Crystal, Velvet, or Realistic keystroke — with adjustable volume
• Text size: Compact, Standard, or Large


Found a bug or have a suggestion? We'd love to hear from you: support@tricolorcat.com
Thank you!