Numinion - Smart Calculator
RPN, Graphing & Converter
$6.99
The calculator built for engineers, scientists, and accountants. Powerful. Private. No ads.
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)
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, AH SEN TEW, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- AH SEN TEW
- Size
- 3.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Justin Tew
