# Danfoss Troubleshooter vs CORE Service

Danfoss Troubleshooter and CORE Service both sit at 3.7 stars, but that hides the real split: 100% of Danfoss Troubleshooter's written reviews are positive against 0% of CORE Service's. Danfoss Troubleshooter also leads on iOS requirement (11.0 vs 15.6). CORE Service's advantage is ratings volume (19 vs 3). 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 — 3.7 for Danfoss Troubleshooter against 3.6 for CORE Service. That said, the two scores are not equally well evidenced: CORE Service has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 100% of Danfoss Troubleshooter's written reviews are positive against 0% of CORE Service's.

Danfoss Troubleshooter ships an update every 5 months, CORE Service every 3 months. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Danfoss Troubleshooter | CORE Service |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/danfoss-troubleshooter/id499840638/reviews)** | [3.6 (19 ratings)](https://appshunter.io/ios/app/core-service/id1566612696/reviews) |
| Number of ratings | 3 | **19** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 56 MB | 47 MB |
| Requires iOS | **11.0** | 15.6 |
| 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

### Danfoss Troubleshooter

[App page](https://appshunter.io/ios/app/danfoss-troubleshooter/id499840638)

This app helps HVACR technicians diagnose and resolve system issues. It guides users through common symptoms, identifies potential causes, and recommends solutions. An offline database is available for use in remote locations.

**Highlights:** Diagnose HVACR system issues, Identify common symptoms, Recommend solutions, Offline database access, Streamlined interface

**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 Danfoss Troubleshooter free?

Danfoss Troubleshooter 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, Danfoss Troubleshooter or CORE Service?

Danfoss Troubleshooter is rated higher. Danfoss Troubleshooter averages 3.7 out of 5 from 3 ratings, while CORE Service averages 3.6 from 19 ratings.

### Do Danfoss Troubleshooter or CORE Service have ads?

Neither Danfoss Troubleshooter nor CORE Service shows ads.

### Which is updated more often, Danfoss Troubleshooter or CORE Service?

Danfoss Troubleshooter ships an update every 5 months, and CORE Service every 3 months. Most recently, Danfoss Troubleshooter was updated on November 1, 2026 and CORE Service on November 5, 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.*