# McMaster vs ACS Go

The clearest difference is rating: ACS Go at 5.0 against McMaster's 4.3. McMaster's advantage is update cadence (every 5 weeks vs every 6 months) and ratings volume (220 vs 5). 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.

ACS Go holds the better App Store score, 5.0 against 4.3. 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.

McMaster ships an update every 5 weeks, ACS Go every 6 months. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | McMaster | ACS Go |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (220 ratings)](https://appshunter.io/ios/app/mcmaster-carr/id611431035/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/acs-go/id6743709802/reviews)** |
| Number of ratings | **220** | 5 |
| Positive reviews | 68.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 months |
| Monetization | Free | Free |
| Size | 8 MB | 52 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [McMaster-Carr Supply Company](https://appshunter.io/developer/611431038) | [Air Compressor Services](https://appshunter.io/developer/1780405485) |

## 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


### ACS Go

[App page](https://appshunter.io/ios/app/acs-go/id6743709802)

Easily find and order specific parts for your equipment. Link orders to individual machines and access your order history on the go. All the functionality of the website is now available in a convenient mobile application.

**Highlights:** Find and order specific parts, Link orders to machines, Check previous orders, Access order history anywhere, Full website functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is McMaster free?

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

### Is ACS Go free?

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

### Which has better reviews, McMaster or ACS Go?

ACS Go is rated higher. McMaster averages 4.3 out of 5 from 220 ratings, while ACS Go averages 5.0 from 5 ratings.

### Do McMaster or ACS Go have ads?

Neither McMaster nor ACS Go shows ads.

### Which is updated more often, McMaster or ACS Go?

McMaster ships an update every 5 weeks, and ACS Go every 6 months. Most recently, McMaster was updated on September 17, 2026 and ACS Go on September 10, 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.*