Vintage vs WP 31s
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vintage
This app meticulously recreates the functionality and appearance of a 1973 scientific calculator. It offers a photo-realistic interface with animated keys and includes all original functions, plus a "secret" stopwatch. Users can choose between full-speed or simulated original processing speeds.
- Photo-realistic HP-45 design
- Animated keys with sound feedback
- Full HP-45 function implementation
- Includes "secret" stopwatch
- Simulated or full-speed operation
- Cut/copy/paste display value
- Display stack and memory register view
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Vintage-45 is a complete simulation of Hewlett-Packard's scientific hand-held calculator HP-45 from 1973. Processing times and behavior have been carefully modelled after the original. Even the "secret" stopwatch may be activated. Features: • Photo-realistic look based on an existing device • Animated keys with adjustable click sound and visual feedback • All functions and operations of the HP-45 fully implemented • Includes "secret" stopwatch • Full-speed or simulated speed of real calculator • Correct wrong number entries by swiping left across the display • Cut/copy/paste display value • Tap display to show stack and all memory registers • Additional conversions (optional): Celsius vs. Fahrenheit, liters per 100km vs. mpg (US and UK), m/ft, g/oz, g/ozt Double-tap the display for some basic hints. For more information and a short manual visit the homepage: cuveesoft.ch
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 Vintage's $0.99. Vintage's advantage is update cadence (every 5 months vs every 10 months). On rating, review sentiment, ratings volume and ads 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; Vintage costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.8 for Vintage against 4.9 for WP 31s. Both are backed by a comparable volume of ratings — 19 and 15 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Vintage ships an update every 5 months, WP 31s every 10 months. The most recent releases landed on November 4, 2026 and November 2, 2026 respectively.
| Parameter | Vintage | WP 31s |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.8 (19 ratings) | 4.9 (15 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 19 — better | 15 |
| Update frequency | Every 5 months — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 17 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | CuVee Software | Pascal Meheut |
Customer experience
Vintage
WP 31s
In-app purchases
Vintage
No in-app purchases
WP 31s
No in-app purchases
