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 for everyday math, with zero data collection, zero analytics, and zero tracking. Unlike other calculators, this app doesn't phone home. No usage tracking, no telemetry, no ad frameworks buried in the code. It does math — and an optional, fully on-device AI math solver — and nothing else. ✓ Full expression evaluation ✓ Live result preview ✓ Scientific functions ✓ Calculation history ✓ Material 3 dynamic theming ✓ Works offline (with an optional on-device AI math solver) 🔢 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 📷 AI MATH SOLVER (OPTIONAL, EXPERIMENTAL) An experimental extra for higher-RAM devices: photograph a handwritten math expression and let an on-device AI model read and solve it — entirely on your device, with nothing sent to any server. ➡️ HOW TO TURN IT ON: the AI features are hidden until you unlock them. In the calculator, tap the "AC" (all-clear) button 7 times in quick succession — a countdown guides the final taps. A camera icon then appears in the top-left corner, and the unlock is remembered. - Needs a 6 GB+ device and a one-time vision-model download (2.6–4.9