# Installer App vs IN HVAC Calculator

The clearest difference is rating: IN HVAC Calculator at 4.1 against Installer App's 3.0. IN HVAC Calculator also leads on iOS requirement (12.0 vs 15.0). Installer App's advantage is update cadence (every 5 weeks vs every 6 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.

IN HVAC Calculator holds the better App Store score, 4.1 against 3.0. Both are backed by a comparable volume of ratings — 7 and 10 respectively.

Installer App ships an update every 5 weeks, IN HVAC Calculator every 6 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Installer App | IN HVAC Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (7 ratings)](https://appshunter.io/ios/app/installer-app/id423984641/reviews) | **[4.1 (10 ratings)](https://appshunter.io/ios/app/in-hvac-calculator/id1219008229/reviews)** |
| Number of ratings | 7 | **10** |
| Positive reviews | 53.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 months |
| Monetization | Free | Free |
| Size | 90 MB | 27 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Danfoss A/S](https://appshunter.io/developer/423984644) | [Gregory Enterprises](https://appshunter.io/developer/1157657878) |

## What reviewers say

### Installer App

[App page](https://appshunter.io/ios/app/installer-app/id423984641)

This app provides HVAC professionals with a digital toolbox for everyday tasks. It offers product information, installation guides, and advanced features to streamline work, including project management and hydronic balancing tools.

**Highlights:** Radiator Presetting, Product Finder, My Projects (Cloud-based), Hydronic Balancing, Flow/Pressure Calculator, Floor Heating Tools, Burner Converter, Magnetic Tool

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

**In-app purchases:** none


### IN HVAC Calculator

[App page](https://appshunter.io/ios/app/in-hvac-calculator/id1219008229)

This app provides HVAC inspection tools and guidelines for home inspectors. It helps estimate equipment age, size, and requirements, giving inspectors confidence in their reports.

**Highlights:** Equipment circuit requirements calculator, AC tonnage estimation by model number, HVAC manufacture date lookup, Combustion air requirements guide, General HVAC reference information

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Installer App free?

Installer App is free to download, with no in-app purchases.

### Is IN HVAC Calculator free?

IN HVAC Calculator is free to download, with no in-app purchases.

### Which has better reviews, Installer App or IN HVAC Calculator?

IN HVAC Calculator is rated higher. Installer App averages 3.0 out of 5 from 7 ratings, while IN HVAC Calculator averages 4.1 from 10 ratings.

### Do Installer App or IN HVAC Calculator have ads?

Neither Installer App nor IN HVAC Calculator shows ads.

### Which is updated more often, Installer App or IN HVAC Calculator?

Installer App ships an update every 5 weeks, and IN HVAC Calculator every 6 months. Most recently, Installer App was updated on November 1, 2026 and IN HVAC Calculator on November 2, 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.*