RPN Calculator 48: The Engineering Standard for iPhone

Name: RPN Calculator 48
Availability: InStock
Rating: 4.73 (400 reviews)

Ditch the basic calculator for an HP-inspired powerhouse. Experience 100 levels of stack, 50+ undos, and the legendary efficiency of Reverse Polish Notation.

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Publisher

Tom Kerrigan

Engineered for Efficiency

Discover the interface used by 40K+ users.

RPN Calculator 48 app interface showing a multi-level stack display and a scientific keyboard layout inspired by HP 48 series calculators

Settings menu of the RPN Calculator 48 app showing options for notation colors and sound

The tips and tricks help screen for the RPN Calculator 48 app explaining gestures and memory functions.

Interface of the RPN Calculator 48 app displaying a 10 entry stack and scientific buttons

Built for Professional Precision

The tools that make this app stand out, trusted by 40K+ users.

⚡

Unrivaled RPN Efficiency

Eliminate the need for equals keys. Use a 100-entry stack to process complex equations faster and more logically than any standard calculator.

🔄

Total Calculation Safety

Work with confidence. With 50+ levels of undo/redo and intuitive swipe-to-correct gestures, you have the safety net that professional work demands.

🏛️

Classic HP-Inspired Ergonomics

Reclaim your muscle memory with large buttons and a high-contrast layout designed for the 'no-look' speed of experienced power users.

About the app

Everything you need to know about RPN Calculator 48.

Description

RPN Calculator 48 is a polished RPN replacement for Apple's calculator app: - Same scientific functionality as Apple's calculator app* - Use swipe gestures to undo and redo operations! - Starts quickly - Large buttons - Easy-to-read display - 100 entry stack - 6 memory buttons (A-F) - 50+ levels of undo/redo - Saves state on exit The ergonomics (screen and keyboard layout) of RPN Calculator 48 were inspired by HP's outstanding 48-series calculator. RPN Calculator 48 is made by the developer of tChess (the critically acclaimed iPhone chess game) and Learn Chess (the Apple Staff Favorite e-book). * This app is not an HP 48 emulator.

Latest Version

1.0.8

Size

1.2 MB

First Released

Oct 30, 2009

Bring Professional Logic to Your iPhone

Join 40,000+ engineers and power users who have upgraded their workflow. Experience the HP 48-inspired RPN calculator that is built for precision and speed.

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