# WP 31s vs PDF Images Extract

The clearest difference is price: WP 31s at Free against PDF Images Extract's $1.99. WP 31s also leads on rating (4.9 vs 1.0) and ratings volume (15 vs 1). On ads, in-app purchases and device support there is nothing between them.

WP 31s is free to download; PDF Images Extract costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

WP 31s holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: WP 31s has 15 ratings behind it against 1, so its average is the more settled of the two.

WP 31s ships an update every 10 months, PDF Images Extract every 22 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | WP 31s | PDF Images Extract |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.9 (15 ratings)](https://appshunter.io/ios/app/wp-31s/id973621300/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/pdf-images-extract/id6470053868/reviews) |
| Number of ratings | **15** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 22 months |
| Monetization | **Free** | Paid |
| Size | 16 MB | 3 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pascal Meheut](https://appshunter.io/developer/620255097) | [Jorge Lucioni Charalla](https://appshunter.io/developer/1198674844) |

## 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


### PDF Images Extract

[App page](https://appshunter.io/ios/app/pdf-images-extract/id6470053868)

Easily extract, view, and save images from any PDF file directly on your device. This tool offers a fast and private way to access embedded visuals without needing an internet connection. Export images to Files, clipboard, or share them instantly.

**Highlights:** Extract images from PDFs, On-device processing, Fast and intuitive interface, Export to Files app, Copy to clipboard, Share instantly

**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 PDF Images Extract free?

PDF Images Extract costs $1.99, with no in-app purchases.

### Which has better reviews, WP 31s or PDF Images Extract?

WP 31s is rated higher. WP 31s averages 4.9 out of 5 from 15 ratings, while PDF Images Extract averages 1.0 from 1 ratings.

### Do WP 31s or PDF Images Extract have ads?

Neither WP 31s nor PDF Images Extract shows ads.

### Which is updated more often, WP 31s or PDF Images Extract?

WP 31s ships an update every 10 months, and PDF Images Extract every 22 months. Most recently, WP 31s was updated on October 24, 2026 and PDF Images Extract on October 16, 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.*