# Ref Tools vs CORE Service

The clearest difference is review sentiment: Ref Tools at 58% against CORE Service's 0%. Ref Tools also leads on rating (3.9 vs 3.6) and update cadence (every 6 weeks vs every 3 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Ref Tools holds the better App Store score, 3.9 against 3.6. Both are backed by a comparable volume of ratings — 52 and 19 respectively. Written reviews point the same way: 58% of Ref Tools's written reviews are positive against 0% of CORE Service's.

Ref Tools ships an update every 6 weeks, CORE Service every 3 months. The most recent releases landed on September 19, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | Ref Tools | CORE Service |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (52 ratings)](https://appshunter.io/ios/app/ref-tools/id472312541/reviews)** | [3.6 (19 ratings)](https://appshunter.io/ios/app/core-service/id1566612696/reviews) |
| Number of ratings | **52** | 19 |
| Positive reviews | **57.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 98 MB | 46 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Danfoss A/S](https://appshunter.io/developer/423984644) | [Lennox Industries](https://appshunter.io/developer/355049651) |

## 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


### CORE Service

[App page](https://appshunter.io/ios/app/core-service/id1566612696)

This app provides a wireless interface for commercial HVAC technicians to control and service specific Lennox rooftop units. It offers guided setup, enhanced testing, and parameter configuration to streamline the service process.

**Highlights:** Wireless mobile service app, Guided setup with progress indicators, Enhanced test functionality, Real-time sensor readings and trending, Parameter configuration, Exportable setup summaries

**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 CORE Service free?

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

### Which has better reviews, Ref Tools or CORE Service?

Ref Tools is rated higher. Ref Tools averages 3.9 out of 5 from 52 ratings, while CORE Service averages 3.6 from 19 ratings.

### Do Ref Tools or CORE Service have ads?

Neither Ref Tools nor CORE Service shows ads.

### Which is updated more often, Ref Tools or CORE Service?

Ref Tools ships an update every 6 weeks, and CORE Service every 3 months. Most recently, Ref Tools was updated on September 19, 2026 and CORE Service on August 15, 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.*