# Aluminum Quick Reference vs Auribook

The clearest difference is in-app purchases: Aluminum Quick Reference at none against Auribook's 5. Aluminum Quick Reference also leads on iOS requirement (6.0 vs 15.0). Auribook's advantage is update cadence (every 3 weeks vs every 7 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Auribook sells 5 in-app purchases, starting at $1.99 per 3 months. Aluminum Quick Reference asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Aluminum Quick Reference against 5.0 for Auribook. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Aluminum Quick Reference ships an update every 7 months, Auribook every 3 weeks. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Aluminum Quick Reference | Auribook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/aluminum-quick-reference/id923924594/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/auribook-audiobook-player/id6752285662/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 21 MB |
| Requires iOS | **6.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [PFI Knowledge Solutions Ltd](https://appshunter.io/developer/702178176) | [Jonas Minke](https://appshunter.io/developer/1838658027) |

## 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


### Auribook

[App page](https://appshunter.io/ios/app/auribook-audiobook-player/id6752285662)

Listen to audiobooks and podcasts directly on your Apple Watch. Access a library of public domain classics or connect to your own server for offline playback. Enjoy seamless syncing and a private listening experience.

**Highlights:** Offline audiobook and podcast playback, Public domain audiobook library, Connect to Audiobookshelf server, Progress syncing, Watch face complications, Sleep timer

**Features:** Apple Watch app

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Catalog | $1.99 | per 3 months |
| Small Tip | $0.99 | one-time |
| Cloud Providers | $1.99 | one-time |
| Medium Tip | $3.99 | one-time |
| Large Tip | $5.99 | one-time |


## Frequently asked questions

### Is Aluminum Quick Reference free?

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

### Is Auribook free?

Auribook is free to download, with in-app purchases available.

### Which has better reviews, Aluminum Quick Reference or Auribook?

Aluminum Quick Reference and Auribook are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Aluminum Quick Reference or Auribook have ads?

Neither Aluminum Quick Reference nor Auribook shows ads.

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

Aluminum Quick Reference ships an update every 7 months, and Auribook every 3 weeks. Most recently, Aluminum Quick Reference was updated on October 24, 2026 and Auribook on October 26, 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.*