# Basic RPN Calculator

> Basic RPN calculator with arithmetic, trig, and constants for students. (iPhone/iPad app by Ventura Educational Systems.)

- Source: https://appshunter.io/ios/app/basic-rpn-calculator/id554809290 (this page in markdown: same URL + `.md`)
- Developer: [Ventura Educational Systems](https://appshunter.io/developer/371324172)
- Category: Education, Productivity
- Price: $0.99
- Rating: 2.50/5 from 2 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 23 MB
- Languages: English
- Released: 2012-09-12
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/basic-rpn-calculator/id554809290/reviews.md

## What is Basic RPN Calculator?

This easy to use basic RPN (Reverse Polish Notation) calculator is perfect for students and others who are new to the use of the RPN method for entering calculations.

In addition to the four basic arithmetic operations, square root, 1/x, log, sin, cos, tan and +/-are available.  Two special numbers pi, and e can be entered by tapping a button.

## Key features

- Reverse Polish Notation (RPN) input
- Basic arithmetic operations
- Square root, reciprocal, log, sin, cos, tan
- Sign change (+/-)
- Constants pi and e

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/basic-rpn-calculator/id554809290/reviews.md

### 4/5 — RPN on the phone

*2020-05-18, version 3.0*

I got this calculator for my phone simply because I strongly prefer RPN logic, since it’s what I’ve used all my life; I always mess up what to punch when on regular calculators, plus I find it easier to tack on unplanned numbers to calculate. I only use it for arithmetic functions, so I can’t attest to higher level math functions, but for my simple use I’ve been happy with this calculator.

### 1/5 — The user

*2017-05-18, version 2.0*

For trig functions, I have tried every entry sequence I can think of, but cannot get it to give the correct answer. I am aware of the degrees/radians choice and that is not the problem. Also what is the "f 0.00" choice for?

**Developer response:** For a trig function, enter the number and then press the desired function.  f 0.00 fixes the number of decimal places.

### 2/5 — bug

*2013-08-03, version 1.0*

Seems to have a bug where the second press of the decimal key doesn't register.

**Developer response:** There can only be one decimal point in a number, so if the decimal point is pressed a second time it is ignored.

## Frequently asked questions about Basic RPN Calculator

### What is Basic RPN Calculator?

Basic RPN Calculator is a paid iOS application designed for users learning Reverse Polish Notation. It offers standard arithmetic, trigonometric functions, and constants like pi and e.

### What devices does Basic RPN Calculator support?

Basic RPN Calculator is available for iPhone, iPad, and iPod touch devices.

### How much does Basic RPN Calculator cost?

Basic RPN Calculator is a paid app priced at $0.99.

### What age rating does Basic RPN Calculator have?

Basic RPN Calculator has an age rating of 4+, making it suitable for young learners and general use.

### When was Basic RPN Calculator last updated?

The latest version of Basic RPN Calculator was released on May 12, 2020, with version 3.0.

### What learning methodology does Basic RPN Calculator use?

Basic RPN Calculator focuses on teaching the Reverse Polish Notation (RPN) method for entering calculations, which is a different approach to standard algebraic entry.

### Does Basic RPN Calculator offer progress tracking?

Basic RPN Calculator is a tool for performing calculations and does not include features for tracking user progress or providing educational courses.

### What is the user sentiment for Basic RPN Calculator?

Based on limited data, Basic RPN Calculator has a rating of 2.5 stars from 2 ratings, suggesting mixed user reception.

## Version history (last 1 release)

### 3.0 — 2020-05-12

This version provides improved screen resolution when installed on iPhone 8 and iPhone 11 models.

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## More apps by Ventura Educational Systems

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All apps by Ventura Educational Systems: https://appshunter.io/developer/371324172

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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.*