# 11C Scientific Calculator RPN — A full simulation of 11C model

> RPN scientific calculator simulation with advanced math and programming features. (iPhone/iPad app by nguyen ngoc khanh.)

- Source: https://appshunter.io/ios/app/11c-scientific-calculator-rpn/id1247100501 (this page in markdown: same URL + `.md`)
- Developer: [nguyen ngoc khanh](https://appshunter.io/developer/1180909864)
- Category: Education, Utilities
- Price: $3.99
- Rating: 2.00/5 from 3 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 10 MB
- Languages: American English
- Released: 2017-06-12
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/11c-scientific-calculator-rpn/id1247100501/reviews.md

## What is 11C Scientific Calculator RPN?

This App is a full simulation of the successful 11C Scientific RPN calculator.

◇Decimal style (1,234,567.89 1.234.567,89)

◇Quick User Guide

◇Support Contact

◇11C Features
Logic system	RPN
Stack levels	4
Last x
Storage Addition (STO +)
Storage Arithmetic (STO +, -, ×, ÷)

◇Math
+, -, ×, ÷
1/x sq. root x2 LOG x
10x LN x ex yx
pi % % change

◇Statistical
Mean, standard deviation (# of variables)	2
Summation of n, x, x2
Summation of n, x, x2, y
Summation of n, x, x2, y, xy
Summation of n, x, x2, y, y2, xy
Random number generator
Linear regression, estimate 
Correlation coefficient
Factorial
Gamma
Combinations and permutations
INTeger truncation and ABSolute value
Trigonometric functions (SIN, COS etc.)
Hyperbolic trig. (SINH, COSH etc.)
# of trig. modes (degrees, radians, grads) 3

◇Scientific and Time	
Polar / rectangular conversions
Decimal hrs / hrs.min.sec. conversions

A mid-range and programmable scientific calculator, the HP 11C has two features that are an improvement from an earlier version, the 33E/C. These two features are its built-in random number generator and a backspace key that enables users to correct a problem or formula one number at a time. Other built-in features of the HP 11C calculator include hyperbolic and inverse hyperbolic trigonometric functions, combinations and permutations on probability, percent change, factorial, and absolute value. The main advantage of the 11C calculator is its programming capabilities. This allows for label addressing (0-9 and A-E), subroutines (nestable to 4 deep), 8 conditional tests, increment/decrement loops, and 2 flags. Users also have the option to redefine the number of certain keyboard keys.

## Key features

- RPN logic system
- 4 stack levels
- Extensive math functions
- Statistical calculations
- Programming capabilities
- Scientific and time conversions

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/11c-scientific-calculator-rpn/id1247100501/reviews.md

### 4/5 — Decimal points

*2023-03-12*

Cannot change from European (,) to American (.) decimal point indicator

### 1/5 — RPN calc.

*2020-02-26, version 1.1*

Can’t turn the d__m thing off. Pretty low res device. Should be free. Half the keys don’t do anything. Developer spent more time on the call olor scheme than on coding.

### 1/5 — App swipe off my 10R screen

*2019-05-05, version 1.1*

I like this app but I can’t get it to swipe off my screen once opened in full screen.  The only way I can close the app is to shut down my phone completely. I do not know if this is me just not knowing how but I have many apps and have never had this problem with any of them.

## Frequently asked questions about 11C Scientific Calculator RPN

### What is the 11C Scientific Calculator RPN?

11C Scientific Calculator RPN is a mobile application that provides a full simulation of the HP 11C scientific RPN calculator. It includes a wide array of mathematical, statistical, and scientific functions, along with programming capabilities.

### What kind of math functions does 11C Scientific Calculator RPN offer?

It supports basic arithmetic operations (+, -, ×, ÷), square roots, logarithms, exponents, pi, percentage calculations, and trigonometric functions (SIN, COS, etc.) with modes for degrees, radians, and grads.

### Does 11C Scientific Calculator RPN support RPN input?

Yes, the app features the RPN (Reverse Polish Notation) logic system, which is a key characteristic of the simulated 11C model. It also includes a quick user guide to help with its operation.

### What statistical features are available in 11C Scientific Calculator RPN?

The app offers statistical functions such as mean, standard deviation, summations of various data points (n, x, x², y, y², xy), a random number generator, linear regression, and correlation coefficient calculations.

### Can 11C Scientific Calculator RPN be used for programming?

Yes, a significant advantage of this calculator simulation is its programming capabilities. It supports label addressing, nestable subroutines, conditional tests, and loops, allowing users to create and run programs.

### What devices is 11C Scientific Calculator RPN available on?

Based on the provided data, 11C Scientific Calculator RPN is supported on iPhone and iPod devices. It is designed for iOS.

### What is the age rating for 11C Scientific Calculator RPN?

The app has an age rating of 4+, making it suitable for a wide range of users. It is available for download on supported iOS devices.

### How often is 11C Scientific Calculator RPN updated?

The application was last updated on November 1, 2017, with version 1.1. The initial release date was June 12, 2017. Further update frequency is not specified.

## Version history (last 2 releases)

### 1.1 — 2017-11-01

This app has been updated by Apple to display the Apple Watch app icon.

Add sound on/off 
Fix bugs

### 1.0 — 2017-06-12

No release notes.

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All apps by nguyen ngoc khanh: https://appshunter.io/developer/1180909864

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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 2026-06-10.*