# Danfoss Troubleshooter vs HVACsim

The clearest difference is rating: Danfoss Troubleshooter at 3.7 against HVACsim's 2.2. Danfoss Troubleshooter also leads on in-app purchases (none vs 1) and iOS requirement (11.0 vs 13.4). HVACsim's advantage is update cadence (every 2 months vs every 5 months) and ratings volume (13 vs 3). On price, ads and device support there is nothing between them.

Both are free to download. HVACsim sells 1 one-off in-app purchase. Danfoss Troubleshooter asks for nothing beyond the download.

Danfoss Troubleshooter holds the better App Store score, 3.7 against 2.2. Both are backed by a comparable volume of ratings — 3 and 13 respectively.

Danfoss Troubleshooter ships an update every 5 months, HVACsim every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Danfoss Troubleshooter | HVACsim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/danfoss-troubleshooter/id499840638/reviews)** | [2.2 (13 ratings)](https://appshunter.io/ios/app/hvacsim/id6740935191/reviews) |
| Number of ratings | 3 | **13** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 56 MB | 20 MB |
| Requires iOS | **11.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Danfoss A/S](https://appshunter.io/developer/423984644) | [Nauman Innovation Group LLC](https://appshunter.io/developer/1764933586) |

## 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


### HVACsim

[App page](https://appshunter.io/ios/app/hvacsim/id6740935191)

This app offers interactive learning and real-world data analysis to help HVAC professionals diagnose and troubleshoot systems. It provides personalized training plans, skill assessments, and team management tools for contractors.

**Highlights:** Technical Knowledge Evaluator, Individualized Learning Plans, Real-World Data Analysis, Team Management Tools, Continuous Learning Library

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $29.99 | one-time |


## Frequently asked questions

### Is Danfoss Troubleshooter free?

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

### Is HVACsim free?

HVACsim is free to download, with in-app purchases available.

### Which has better reviews, Danfoss Troubleshooter or HVACsim?

Danfoss Troubleshooter is rated higher. Danfoss Troubleshooter averages 3.7 out of 5 from 3 ratings, while HVACsim averages 2.2 from 13 ratings.

### Do Danfoss Troubleshooter or HVACsim have ads?

Neither Danfoss Troubleshooter nor HVACsim shows ads.

### Which is updated more often, Danfoss Troubleshooter or HVACsim?

Danfoss Troubleshooter ships an update every 5 months, and HVACsim every 2 months. Most recently, Danfoss Troubleshooter was updated on October 24, 2026 and HVACsim on October 24, 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.*