# McMaster vs USABlueBook Catalogs

The clearest difference is rating: McMaster at 4.3 against USABlueBook Catalogs's 1.8. McMaster also leads on review sentiment (68% vs 29%) and ratings volume (220 vs 5). USABlueBook Catalogs's advantage is iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

McMaster holds the better App Store score, 4.3 against 1.8. That said, the two scores are not equally well evidenced: McMaster has 220 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 68% of McMaster's written reviews are positive against 29% of USABlueBook Catalogs's.

McMaster ships an update every 5 weeks, USABlueBook Catalogs every 3 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | McMaster | USABlueBook Catalogs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (220 ratings)](https://appshunter.io/ios/app/mcmaster-carr/id611431035/reviews)** | [1.8 (5 ratings)](https://appshunter.io/ios/app/usabluebook-catalogs/id619909125/reviews) |
| Number of ratings | **220** | 5 |
| Positive reviews | **68.5% of reviews** | 28.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 8 MB | 23 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [McMaster-Carr Supply Company](https://appshunter.io/developer/611431038) | [HD Supply, Inc.](https://appshunter.io/developer/585691355) |

## What reviewers say

### McMaster

[App page](https://appshunter.io/ios/app/mcmaster-carr/id611431035)

Access a vast catalog of industrial and maintenance supplies from your mobile device. Browse and order over 800,000 products for your plant and facility needs.

**Highlights:** Extensive product catalog, Order from mobile, Plant and facility supplies, Over 800,000 products

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and navigate
- 🚀 Fast search and filtering
- 💡 Excellent catalog and product descriptions
- ⭐ Great company and customer service
- 📦 Quick shipping and delivery

**What reviewers complain about**

- 🐛 App is broken/only header loads
- 🐛 App freezes and becomes unresponsive
- 🐛 Navigation is confusing and awkward
- 🐛 App is not phone-friendly
- 🐛 Font size cannot be increased

**Reported bugs**

- Payment method stays loading indefinitely
- Only header loads
- App is broken
- Navigation tools are in awkward locations and don't work half the time
- Screen shifts slightly

**Requested features**

- Re-optimize app for phone use
- Add Apple Pay as a payment option
- Add a toolbar or ribbon for easier navigation
- Make navigation buttons at the top left like other apps
- Add a "is this page helpful?" link


### USABlueBook Catalogs

[App page](https://appshunter.io/ios/app/usabluebook-catalogs/id619909125)

Access a comprehensive virtual catalog for water and wastewater operations and maintenance. Browse over 32,000 items with pricing and detailed product information. Download the catalog for offline viewing and find links to extensive product manuals and specifications.

**Highlights:** 1,760-page virtual catalog, Offline catalog download, Product information and pricing, Over 32,000 items in stock, Links to product manuals and specifications

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is McMaster free?

McMaster is free to download, with no in-app purchases.

### Is USABlueBook Catalogs free?

USABlueBook Catalogs is free to download, with no in-app purchases.

### Which has better reviews, McMaster or USABlueBook Catalogs?

McMaster is rated higher. McMaster averages 4.3 out of 5 from 220 ratings, while USABlueBook Catalogs averages 1.8 from 5 ratings.

### Do McMaster or USABlueBook Catalogs have ads?

Neither McMaster nor USABlueBook Catalogs shows ads.

### Which is updated more often, McMaster or USABlueBook Catalogs?

McMaster ships an update every 5 weeks, and USABlueBook Catalogs every 3 months. Most recently, McMaster was updated on October 24, 2026 and USABlueBook Catalogs on October 23, 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.*