# Pascal: 3-in-1 Calculator — RPN, Trig, Graphs and Bits

> A versatile scientific, graphing, and programmer calculator with RPN support. (iPhone/iPad app by Andrew Wei.)

- Source: https://appshunter.io/ios/app/pascal-3-in-1-calculator/id828838134 (this page in markdown: same URL + `.md`)
- Developer: [Andrew Wei](https://appshunter.io/developer/828838137)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Rating: 4.20/5 from 22 App Store ratings · 86 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 15 MB
- Languages: American English, French (France), Japanese, European Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2014-03-05
- Data updated: 2026-07-06
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/pascal-3-in-1-calculator/id828838134/reviews.md

## What is Pascal?

Pascal (formerly Calculator³) is a professional-grade 3-in-1 scientific, graphing and programmer calculator. For FREE, Pascal comes loaded with a feature-packed scientific calculator, Today widget and Apple Watch app. The graphing calculator and programmer calculator require IAP unlock, but come with 3 trials each for you to give them a test run. During the trial periods you have access to all features. TIP: Simply reinstall the app to replenish the trial counts. 

Some noteworthy features:

Scientific Calculator¹ (FREE)
- Supports degree, radian and gradian modes
- Decimal factorials
- Modulo operator
- Permutations (nPr) and combinations (nCr)
- Standard memory functions
- RPN mode

Graphing Calculator² (IAP)
- Includes all functions the scientific calculator offers
- TI-like design
- Perform calculations on a smart tape (i.e. no need to close parenthesis, multiply out brackets, real-time syntax highlighting)
- Plot graphs using adaptive sampling algorithm to generate precise results
- Show or hide roots/intersections and trace values

Programmer Calculator³ (IAP)
- Supports 8, 16, 32, and 64-bit bitwise calculations
- Binary (base-2), octal (base-8), decimal (base-10), and hexadecimal (base-16) numeral systems too
- Unicode (UTF-16) and ASCII character encoding
- A binary table that shows you in real time the binary representation of the current operand
- RPN mode

## Key features

- Scientific calculator (degree, radian, gradian modes)
- RPN mode
- Graphing calculator with smart tape and adaptive sampling
- Programmer calculator (8, 16, 32, 64-bit bitwise)
- Multiple numeral systems (binary, octal, decimal, hex)
- Unicode and ASCII character encoding

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Theme Pack | $0.99 | one-time |
| Graphing Calculator | $1.99 | one-time |
| Programmer Calculator | $1.99 | one-time |


## What do users think of Pascal?

Overall sentiment: positive

**Pros**

- ✨ Clean and modern design
- 🚀 Fast and responsive
- 👍 User-friendly interface
- 💡 Comprehensive functionality
- 🌟 Excellent for school/university
- 📱 Great Apple Watch app
- 📈 Powerful graphing capabilities
- 💻 Useful programming calculator
- 💸 Good value for features
- 🆓 Free with no ads (for basic version)
- 🔄 Smooth rotation support
- 📲 Useful widget
- 💡 Supports RPN logic
- 🎨 Appealing themes available

**Cons**

- 💰 Graphing and programming features require payment
- ⌨️ No iPad Magic Keyboard support
- 🤔 RPN logic not easily discoverable
- 📉 Some users lost premium features after updates
- ⚠️ Potential for crashes after updates
- 🚫 No tape for DEG mode
- ❓ Difficulty finding polar graph instructions
- 🔊 Annoying click sounds

**Commonly reported bugs**

- Crashes after updates
- Premium features reverted to basic
- Cannot enter numbers with iPad Magic Keyboard
- RPN logic not selectable
- Key response slow or nonexistent on watch
- Lost programming calculator after update
- App crashes when typing '='
- App crashes immediately upon opening
- Fonts are blurry on iPhone 6
- Bug with exponentiation (adds random digit 2)
- Cannot swipe to change calculator modes
- Making a number negative results in incorrect value

**Most requested features**

- Add RPN to Apple Watch app
- Improve iPad Magic Keyboard support
- Make themes free for all users
- Add a backspace button to Apple Watch app
- Add Arabic language support
- Change app icon for better recognition
- Option to disable or change click sounds
- Improve navigation for editing equations
- Make graph view full screen
- Add polar graph instructions or functionality
- Add a tape for DEG mode
- Add a widget for iOS 8

## Recent user reviews (10 of 86)

All indexed reviews: https://appshunter.io/ios/app/pascal-3-in-1-calculator/id828838134/reviews.md

### 5/5 — Pascal RPN

*2026-05-27, version 9.0.1*

I love this calculator. Excellent design without having to imitate the 70’s physical ones. 5 stars

### 2/5 — Too limited.

*2022-06-06, version 9.0.1*

Also, I thought the description mentioned this used RPN logic? If so, I could not find how to select it.

### 5/5 — Great interface, missing RPN on Apple Watch

*2022-04-22, version 9.0.1*

This is a fantastic iOS app and works very well. The only thing to make it better would be some additional features on the Apple Watch side, such as RPN.

### 1/5 — Does not support iPad keyboard

*2021-09-18, version 9.0.1*

I just bought the IAP for this app and then I discover that it doesn’t support entering numbers when using the Magic Keyboard oniPad - this is an unserious app.

### 5/5 — This app is amazing

*2021-07-28, version 9.0.1*

Iv been using this app for school and it’s perfect has everything you could need also tilt your phone to either side to get even more features

### 5/5 — RPN Yeah !

*2021-01-27, version 9.0.0*

Wanted a modern looking yet using RPN. This is the one. I’m going to buy a few in app to encourage this dev.

Great job and UI is clean looking.

Ps. I would buy a feature bundle if there was any.

### 5/5 — Super user friendly!

*2020-11-20, version 9.0.0*

Nice user interface, easy to use.   Love it!

### 5/5 — Love it

*2020-10-15, version 9.0.0*

Great calculator. From easy to complex tasks

### 5/5 — Perfect Calculator App

*2020-10-14, version 9.0.0*

I have been using this app for many years. No other calculator app pays as much attention to both function AND design like Pascal. It’s a beautiful calculator.

### 5/5 — Simple use

*2019-12-05, version 7.0.1*

Great app!

## Frequently asked questions about Pascal

### What does Pascal: 3-in-1 Calculator do?

Pascal is a professional-grade calculator app that combines scientific, graphing, and programmer functionalities. It offers advanced features for various calculation needs, including RPN mode, complex mathematical operations, and bitwise calculations.

### What are the key features of the scientific calculator?

The free scientific calculator supports degree, radian, and gradian modes, decimal factorials, modulo operator, permutations and combinations, standard memory functions, and RPN mode. It also includes a Today widget and Apple Watch app.

### How much does the graphing and programmer calculator cost?

The graphing calculator and programmer calculator require an in-app purchase to unlock. However, the app provides three trials for each of these modes, allowing you to test their full functionality before purchasing.

### What platforms is Pascal: 3-in-1 Calculator compatible with?

Based on the description mentioning 'Apple Watch app' and 'Today widget', the app is designed for Apple devices, likely including iPhones, iPads, and Apple Watches running compatible iOS versions.

### Can I use the app for programming tasks?

Yes, the app includes a dedicated programmer calculator that supports 8, 16, 32, and 64-bit bitwise calculations. It also handles binary, octal, decimal, and hexadecimal numeral systems, along with Unicode and ASCII character encoding.

## Version history (last 5 releases)

### 9.0.1 — 2021-05-07

- Added privacy information—this app does not, and will never, collect any data from you

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If you enjoy using Pascal, please consider leaving a positive review. It means a lot!

### 9.0.0 — 2020-10-14

Calculator³ is now renamed to Pascal, the 3-in-1 calculator. So long, Calculator³!
- while tracing graphs, you can now tap on overlapping trace labels to alternate their Z position (to view the covered up labels underneath)
- UI glitch fixes
- localization improvements

---
If you enjoy using Pascal, please consider leaving a positive review. It means a lot!

### 8.0.1 — 2020-10-05

- minor optimizations

---
If you enjoy using Calculator³, please consider leaving a positive review. It means a lot!

### 8.0.0 — 2020-10-03

- New layout for iPad
- Improved split view for iPad
- Other optimizations for iOS 14
- Various bug fixes

---
If you enjoy using Calculator³, please consider leaving a positive review. It means a lot!

### 7.1.0 — 2020-09-26

- iOS 14 optimizations

---
If you enjoy using Calculator³, please consider leaving a positive review. It means a lot!

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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 2026-07-06.*