Every calculation you make is your business — not Big Tech's. Calculator M3 is a beautifully designed calculator built with Material 3 that works entirely offline with zero data collection, zero analytics, and zero network permissions.

Unlike other calculators, this app doesn't phone home. No usage tracking, no telemetry, no ad frameworks buried in the code. It does one thing and does it well: math.

✓ Full expression evaluation
✓ Live result preview
✓ Scientific functions
✓ Calculation history
✓ Material 3 dynamic theming
✓ Completely offline

🔢 FULL EXPRESSION EVALUATION

Type complete mathematical expressions with proper operator precedence (PEMDAS) and parentheses up to 20 levels deep. See the result update in real-time as you type.

- Full PEMDAS operator precedence
- Parentheses with 20 levels of nesting
- Live result preview as you type
- Tap anywhere in the expression to edit
- High-precision BigDecimal arithmetic
- Engineering notation for large numbers

🔬 SCIENTIFIC FUNCTIONS

- Square root (√)
- Pi (π) constant
- Power (^) exponentiation
- Factorial (!) for values 0-99
- Percent (%) with consumer-style support
- Implicit multiplication (2π, 3√2, etc.)

📜 CALCULATION HISTORY

- Stores up to 100 recent calculations
- Persists across app restarts
- Tap entries to reload them
- Clear history when needed

🎨 MATERIAL 3 DESIGN

- Material You dynamic colors (Android 12+)
- Automatic light and dark mode
- Smooth button press animations
- Haptic feedback
- Adaptive layout for portrait, landscape, and foldable devices
- Auto-sizing display for long expressions

🛡️ PRIVACY & OPEN SOURCE

- 100% open source (GPL v3)
- Zero permissions — no internet access
- No tracking, analytics, or ads
- No data collection of any kind
- Your calculations stay on your device, period

📱 WORKS ON ALL DEVICES

- Phones in portrait and landscape
- Foldable devices (Pixel Fold, Galaxy Z Fold)
- Tablets
- Responsive button sizing and layout