# McMaster vs Belimo RetroFIT+

The clearest difference is rating: Belimo RetroFIT+ at 5.0 against McMaster's 4.3. McMaster's advantage is update cadence (every 5 weeks vs every 7 months) and ratings volume (220 vs 1). 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.

Belimo RetroFIT+ 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 1, so its average is the more settled of the two.

McMaster ships an update every 5 weeks, Belimo RetroFIT+ every 7 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | McMaster | Belimo RetroFIT+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (220 ratings)](https://appshunter.io/ios/app/mcmaster-carr/id611431035/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/belimo-retrofit-plus/id1149281299/reviews)** |
| Number of ratings | **220** | 1 |
| Positive reviews | 68.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 7 months |
| Monetization | Free | Free |
| Size | 8 MB | 7 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [McMaster-Carr Supply Company](https://appshunter.io/developer/611431038) | [BELIMO Automation AG](https://appshunter.io/developer/1149281298) |

## 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


### Belimo RetroFIT+

[App page](https://appshunter.io/ios/app/belimo-retrofit-plus/id1149281299)

Easily find the perfect HVAC replacement actuator for your old or damaged equipment. This app helps you identify the best fitting Belimo product for air or water applications, including globe and rotary valve actuators. It also integrates the complete sensor range and offers project planning tools.

**Highlights:** HVAC replacement actuator finder, Air and water solution identification, Globe and rotary valve actuator selection, Integrated sensor range, OCR function for character recognition, RetroFIT+ project creation and planning

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is McMaster free?

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

### Is Belimo RetroFIT+ free?

Belimo RetroFIT+ is free to download, with no in-app purchases.

### Which has better reviews, McMaster or Belimo RetroFIT+?

Belimo RetroFIT+ is rated higher. McMaster averages 4.3 out of 5 from 220 ratings, while Belimo RetroFIT+ averages 5.0 from 1 ratings.

### Do McMaster or Belimo RetroFIT+ have ads?

Neither McMaster nor Belimo RetroFIT+ shows ads.

### Which is updated more often, McMaster or Belimo RetroFIT+?

McMaster ships an update every 5 weeks, and Belimo RetroFIT+ every 7 months. Most recently, McMaster was updated on November 1, 2026 and Belimo RetroFIT+ on November 2, 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.*