# Ref Tools vs SPX FLOW eXpress

Ref Tools and SPX FLOW eXpress both sit at 3.9 stars, but that hides the real split: 100% of SPX FLOW eXpress's written reviews are positive against 58% of Ref Tools's. Ref Tools's advantage is ratings volume (52 vs 8). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.9 for Ref Tools against 4.0 for SPX FLOW eXpress. That said, the two scores are not equally well evidenced: Ref Tools has 52 ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 58% of Ref Tools's written reviews are positive against 100% of SPX FLOW eXpress's.

Ref Tools ships an update monthly, SPX FLOW eXpress every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Ref Tools | SPX FLOW eXpress |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (52 ratings)](https://appshunter.io/ios/app/ref-tools/id472312541/reviews) | **[4.0 (8 ratings)](https://appshunter.io/ios/app/spx-flow-express/id1591451668/reviews)** |
| Number of ratings | **52** | 8 |
| Positive reviews | 57.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | Free |
| Size | 98 MB | 69 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Danfoss A/S](https://appshunter.io/developer/423984644) | [SPX Flow, Inc.](https://appshunter.io/developer/1166665729) |

## What reviewers say

### Ref Tools

[App page](https://appshunter.io/ios/app/ref-tools/id472312541)

This app provides HVACR technicians with essential tools and information for field service. It includes refrigerant calculators, troubleshooting guides, product finders, and access to spare parts. Listen to educational podcasts to enhance your knowledge on the go.

**Highlights:** Refrigerant Slider for P/T calculations, Solenoid valve coil testing tool, Refrigeration system troubleshooting guide, Product data finder, Spare parts ordering, Low-GWP refrigerant comparison, TXV Superheat optimization, Educational podcasts

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

**In-app purchases:** none

**What reviewers like**

- 👍 Useful tool for HVAC/R techs
- 👍 Great idea for an app
- 👍 Best refrigeration and hvac app
- 👍 Useful App for HVACR
- 👍 Brilliant app

**What reviewers complain about**

- 🐛 Crashes instantly on launch
- 🐛 App won’t open on iPhone
- 🐛 Flashes up and disappears
- 🐛 Cannot open app
- 🐛 Immediately shuts off

**Reported bugs**

- CRASHED instantly on Mac Mini M4
- App won’t open on iPhone
- App flashes up and disappears
- Cannot open app
- Immediately shuts off since recent release

**Requested features**

- More residential AC information
- Troubleshooter for Residential & Commercial
- Add SP22 refrigerant
- Add R-11 refrigerant
- Add R-123 range down to 40 degrees


### SPX FLOW eXpress

[App page](https://appshunter.io/ios/app/spx-flow-express/id1591451668)

Access essential product, service, and support information for leading brands. Scan serial numbers or QR codes to find specifications and parts, document site evaluations, and connect with experts for technical assistance. Available across multiple platforms.

**Highlights:** Scan & Search product specs and parts, Document site evaluations and field service, Submit inquiries for technical support, Access information for multiple SPX FLOW brands, Cross-platform support (iOS, Android, Windows)

**In-app purchases:** none


## Frequently asked questions

### Is Ref Tools free?

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

### Is SPX FLOW eXpress free?

SPX FLOW eXpress is free to download, with no in-app purchases.

### Which has better reviews, Ref Tools or SPX FLOW eXpress?

SPX FLOW eXpress is rated higher. Ref Tools averages 3.9 out of 5 from 52 ratings, while SPX FLOW eXpress averages 4.0 from 8 ratings.

### Do Ref Tools or SPX FLOW eXpress have ads?

Neither Ref Tools nor SPX FLOW eXpress shows ads.

### Which is updated more often, Ref Tools or SPX FLOW eXpress?

Ref Tools ships an update monthly, and SPX FLOW eXpress every 2 months. Most recently, Ref Tools was updated on November 1, 2026 and SPX FLOW eXpress on November 3, 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.*