Numinion - Smart Calculator

Numinion is a professional-grade calculator built entirely with SwiftUI — fast, private, and packed with tools for engineers, scientists, and accountants.

CALCULATOR MODES
• Standard — Full infix expression support. Type 2 + 3 × 4 and get the right answer. Includes 00 key for fast entry and Business/Mathematical % toggle.
• Scientific — Trig, logarithms, powers, factorials, and more. EE key for scientific notation (2 EE 3 = 2000; 2 EE ±3 = 0.002). Bracket support built in.
• RPN (Reverse Polish Notation) — HP-style 4-register stack (X Y Z T) with R↑, R↓, CLR STK, and CLX. For those who prefer it.
• Programmer — Work in hex, decimal, octal, and binary. Full bitwise operations: AND, OR, XOR, NOT, shifts.

FUNCTION GRAPHER
Plot multiple functions simultaneously. Pinch to zoom, drag to pan, double-tap to reset. Trace mode shows exact coordinates as you move across the graph. Intersection finder automatically locates where two curves cross.

UNIT CONVERTER
100+ units across 13 categories: length, mass, temperature, area, volume, speed, pressure, energy, and more. Live currency exchange rates (internet required for currency only — everything else works offline).

PROGRAMS
Built-in engineering solvers for common calculations:
• Ohm's Law — solve for voltage, current, or resistance
• Quadratic Formula — real and complex roots
• Compound Interest — future value with any compounding period
Write your own formula programs or full custom scripts for any repeatable calculation. Tap ? for a built-in guide with examples.

DESIGNED FOR iOS
• Universal — optimised for iPhone and iPad (two-column scientific layout on iPad)
• Calculation history with tap-to-copy
• No ads, no subscriptions, no accounts
• 100% private — all data stays on your device
• Works offline (except live currency rates)