# WP 31s vs DB50X

The clearest difference is price: WP 31s at Free against DB50X's $9.99. WP 31s also leads on iOS requirement (12.0 vs 14.0). DB50X's advantage is update cadence (every 3 weeks vs every 10 months) and chart position (#189 vs unranked). On rating, review sentiment, ratings volume and ads there is nothing between them.

WP 31s is free to download; DB50X costs $9.99 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 — 4.9 for WP 31s against 5.0 for DB50X. Both are backed by a comparable volume of ratings — 15 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

WP 31s ships an update every 10 months, DB50X every 3 weeks. Both last shipped on October 11, 2026.

## The numbers

| Metric | WP 31s | DB50X |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [4.9 (15 ratings)](https://appshunter.io/ios/app/wp-31s/id973621300/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/db50x/id6625971367/reviews)** |
| Number of ratings | **15** | 8 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#189** |
| Size | 16 MB | 7 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pascal Meheut](https://appshunter.io/developer/620255097) | [Christophe de Dinechin](https://appshunter.io/developer/1761608161) |

## What reviewers say

### WP 31s

[App page](https://appshunter.io/ios/app/wp-31s/id973621300)

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.

**Highlights:** RPN scientific calculator emulation, Rich function set, Simplified, less cluttered keyboard, Based on WP 34s, Available on iOS

**Features:** macOS Compatibility

**In-app purchases:** none


### DB50X

[App page](https://appshunter.io/ios/app/db50x/id6625971367)

**Currently charting:** #189 Top Paid · Productivity (US App Store)

This scientific calculator offers high-precision computations with arbitrary precision for numbers. It supports advanced functions like complex numbers, matrices, symbolic calculations, and graphing, with a user-friendly interface and extensive built-in help.

**Highlights:** Arbitrary precision calculations, RPN and algebraic operations, Complex numbers, vectors, matrices, Symbolic and numerical solving, Graphing and plotting, Engineering units and constants, Unicode text support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is WP 31s free?

WP 31s is free to download, with no in-app purchases.

### Is DB50X free?

DB50X costs $9.99, with no in-app purchases.

### Which has better reviews, WP 31s or DB50X?

DB50X is rated higher. WP 31s averages 4.9 out of 5 from 15 ratings, while DB50X averages 5.0 from 8 ratings.

### Do WP 31s or DB50X have ads?

Neither WP 31s nor DB50X shows ads.

### Which is updated more often, WP 31s or DB50X?

WP 31s ships an update every 10 months, and DB50X every 3 weeks. Most recently, WP 31s was updated on October 11, 2026 and DB50X on October 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*