# Aluminum Quick Reference vs ListenBook Pro

The clearest difference is review sentiment: ListenBook Pro at 81% against Aluminum Quick Reference's 0%. ListenBook Pro also leads on update cadence (every 3 weeks vs every 7 months) and ratings volume (22 vs 1). Aluminum Quick Reference's advantage is price (Free vs $24.99) and rating (5.0 vs 4.6). On ads, in-app purchases and device support there is nothing between them.

Aluminum Quick Reference is free to download; ListenBook Pro costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Aluminum Quick Reference holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: ListenBook Pro has 22 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 0% of Aluminum Quick Reference's written reviews are positive against 81% of ListenBook Pro's, so the app with the better star average is not the one people write more warmly about.

Aluminum Quick Reference ships an update every 7 months, ListenBook Pro every 3 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Aluminum Quick Reference | ListenBook Pro |
| --- | --- | --- |
| Price | **Free** | $24.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/aluminum-quick-reference/id923924594/reviews)** | [4.6 (22 ratings)](https://appshunter.io/ios/app/listenbook-pro-book-player/id1529716191/reviews) |
| Number of ratings | 1 | **22** |
| Positive reviews | 0.0% of reviews | **81.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Size | 3 MB | 125 MB |
| Requires iOS | **6.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [PFI Knowledge Solutions Ltd](https://appshunter.io/developer/702178176) | [Oleg Brailean](https://appshunter.io/developer/576182370) |

## What reviewers say

### Aluminum Quick Reference

[App page](https://appshunter.io/ios/app/aluminum-quick-reference/id923924594)

Access essential data for over 200 aluminum alloy designations and temper combinations. View mechanical properties, physical properties, and chemical composition limits. This reference is useful on its own or with a larger database.

**Highlights:** Data on 200+ aluminum alloy designations, Mechanical and physical properties (US Customary & SI Metric), Chemical composition limits, Typical uses by alloy-temper, Companion to ASM Alloy Center Database

**Features:** macOS Compatibility

**In-app purchases:** none


### ListenBook Pro

[App page](https://appshunter.io/ios/app/listenbook-pro-book-player/id1529716191)

This app is a dedicated audiobook player that supports a wide range of audio formats. It offers advanced playback controls, chapter support, and seamless integration with various car systems and smartwatches. The app allows users to manage their personal audiobook library and access public domain books.

**Highlights:** Plays multiple audio formats, Adjustable playback speed, Chapter support, CarPlay and car integrations, Smartwatch support, Sleep timer, Wi-Fi and WebDAV book transfer

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Aluminum Quick Reference free?

Aluminum Quick Reference is free to download, with no in-app purchases.

### Is ListenBook Pro free?

ListenBook Pro costs $24.99, with no in-app purchases.

### Which has better reviews, Aluminum Quick Reference or ListenBook Pro?

Aluminum Quick Reference is rated higher. Aluminum Quick Reference averages 5.0 out of 5 from 1 ratings, while ListenBook Pro averages 4.6 from 22 ratings.

### Do Aluminum Quick Reference or ListenBook Pro have ads?

Neither Aluminum Quick Reference nor ListenBook Pro shows ads.

### Which is updated more often, Aluminum Quick Reference or ListenBook Pro?

Aluminum Quick Reference ships an update every 7 months, and ListenBook Pro every 3 weeks. Most recently, Aluminum Quick Reference was updated on October 24, 2026 and ListenBook Pro on October 29, 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.*