# Numinion - Smart Calculator — RPN, Graphing & Converter

> RPN, Graphing & Converter (iPhone/iPad app by AH SEN TEW.)

- Source: https://appshunter.io/ios/app/numinion-smart-calculator/id6774513250 (this page in markdown: same URL + `.md`)
- Developer: [AH SEN TEW](https://appshunter.io/developer/6774454068)
- Category: Utilities, Productivity
- Price: $6.99
- Age rating: 4+
- Requires: iOS 17.6 · 3 MB
- Languages: American English
- Released: 2026-06-02
- Data updated: 2026-08-16
- User reviews in markdown: https://appshunter.io/ios/app/numinion-smart-calculator/id6774513250/reviews.md

## What is Numinion?

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)


## Version history (last 1 release)

### 1.0 — 2026-06-02

No release notes.

## More apps by AH SEN TEW

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- [StorageXSense - Cleaner](https://appshunter.io/ios/app/storagexsense-cleaner/id6775413700)

All apps by AH SEN TEW: https://appshunter.io/developer/6774454068

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-16.*