Pascal vs WP 31s
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pascal
This app offers a powerful 3-in-1 calculator experience, combining scientific, graphing, and programmer functionalities. The scientific calculator is free, while graphing and programmer modes require an in-app purchase, with trials available for testing.
- 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
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Pascal (formerly Calculator³) is a professional-grade 3-in-1 scientific, graphing and programmer calculator. Scientific Calculator¹ - Supports degree, radian and gradian modes - Decimal factorials - Modulo operator - Permutations (nPr) and combinations (nCr) - Standard memory functions - RPN mode Graphing Calculator² - 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 - 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
WP 31s
This app emulates a classic RPN scientific calculator, offering a rich function set for daily use with a simplified interface. It's based on the more complex WP 34s but is designed for easier operation.
- RPN scientific calculator emulation
- Rich function set
- Simplified, less cluttered keyboard
- Based on WP 34s
- Available on iOS
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WP 31s is a classic RPN scientific calculator based on the powerful but more complex WP 34s. Now available on iOS too (see the support site for other emulators and for the real stuff). It is not programmable but has a rich function set for daily use and is easier to use, thanks to a less cluttered keyboard. A manual can be downloaded at http://sourceforge.net/projects/wp34s/files/doc/Manual_wp_31s_1_2q.pdf/download
Screenshots
Verdict
The clearest difference is price: WP 31s at Free against Pascal's $2.99. WP 31s also leads on rating (4.9 vs 4.0) and in-app purchases (none vs 3). Pascal's advantage is update cadence (every 2 weeks vs every 10 months). On ratings volume, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
WP 31s is free to download; Pascal costs $2.99 up front. Pascal sells 3 one-off in-app purchases. WP 31s asks for nothing beyond the download.
WP 31s holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 23 and 15 respectively. Written reviews point the same way: 68% of Pascal's written reviews are positive against 100% of WP 31s's.
Pascal ships an update every 2 weeks, WP 31s every 10 months. The most recent releases landed on October 21, 2026 and October 11, 2026 respectively.
| Parameter | Pascal | WP 31s |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (23 ratings) | 4.9 (15 ratings) — better |
| Positive reviews | 68.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 23 — better | 15 |
| Update frequency | Every 2 weeks — better | Every 10 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew Wei | Pascal Meheut |
Customer experience
Pascal
WP 31s
Bugs and requests
Pascal
Reported bugs
12 issues- 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
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- 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
Requested features
12 requests- 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
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- 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
WP 31s
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Pascal
- Theme Pack$0.99
- Graphing Calculator$1.99
- Programmer Calculator$1.99
WP 31s
No in-app purchases
