Calculator: Simple & Clean

viennaa

About this app

A calculator that does exactly what it should — quickly, beautifully, and completely offline.

No ads. No tracking. No permissions. Just math.

CALCULATE WITH CONFIDENCE
• Addition, subtraction, multiplication, division
• Parentheses with smart auto-closing — type 5( and it knows you mean 5×(
• Percent key for quick discounts and tips (50% = 0.5)
• Sign toggle (±) and one-tap backspace
• Live result preview as you type, before you even press equals

ACCURATE DECIMAL MATH
Most calculators answer 0.1 + 0.2 with 0.30000000000000004. This one says 0.3. Calculations use precise decimal arithmetic, so the rounding errors that plague floating-point calculators simply don't happen.

HISTORY THAT WORKS FOR YOU
• Every calculation is saved automatically and survives app restarts
• Tap any past result to drop it straight into your current expression
• Clear the whole history with one tap whenever you want
• History never leaves your phone

BUILT FOR REAL NUMBERS
• Very large and very small results switch to clean scientific notation (2.6E21) instead of overflowing the screen
• Long expressions shrink and wrap so every digit stays visible
• Thousands separators make big numbers readable at a glance

LIGHT AND FAST
• Modern Material You design with light and dark themes
• Tiny download, instant launch
• Works 100% offline — the app doesn't even request internet access

PRIVACY BY DESIGN
This app collects nothing. There are no analytics, no advertising SDKs, no accounts, and no network access. Your calculation history is stored only on your device and is deleted when you uninstall the app or tap "Clear history".

Simple tools should respect your time and your privacy. This one does both.

What’s new

initial release.