# Ref Tools vs RAD Auth

The clearest difference is rating: RAD Auth at 5.0 against Ref Tools's 3.9. RAD Auth also leads on update cadence (weekly vs every 5 weeks) and iOS requirement (10.0 vs 15.0). Ref Tools's advantage is ratings volume (52 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.

RAD Auth holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Ref Tools has 52 ratings behind it against 1, so its average is the more settled of the two.

Ref Tools ships an update every 5 weeks, RAD Auth weekly. The most recent releases landed on October 7, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Ref Tools | RAD Auth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (52 ratings)](https://appshunter.io/ios/app/ref-tools/id472312541/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rad-auth/id1569307692/reviews)** |
| Number of ratings | **52** | 1 |
| Positive reviews | 57.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 98 MB | 33 MB |
| Requires iOS | 15.0 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Danfoss A/S](https://appshunter.io/developer/423984644) | [Robotic Assistance Devices Inc](https://appshunter.io/developer/1482389582) |

## 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


### RAD Auth

[App page](https://appshunter.io/ios/app/rad-auth/id1569307692)

This multi-factor authentication app provides an extra layer of security for clients using specific company products. It allows authorized users within a company to access authentication services unique to their organization. The app is offered as an optional security enhancement.

**Highlights:** Multi-factor authentication, Enhanced security layer, Internal client access only, Company-specific authentication services, Optional security feature

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ref Tools free?

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

### Is RAD Auth free?

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

### Which has better reviews, Ref Tools or RAD Auth?

RAD Auth is rated higher. Ref Tools averages 3.9 out of 5 from 52 ratings, while RAD Auth averages 5.0 from 1 ratings.

### Do Ref Tools or RAD Auth have ads?

Neither Ref Tools nor RAD Auth shows ads.

### Which is updated more often, Ref Tools or RAD Auth?

Ref Tools ships an update every 5 weeks, and RAD Auth weekly. Most recently, Ref Tools was updated on October 7, 2026 and RAD Auth on September 30, 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.*