# Navisizer vs Homans HVAC Pro+

The clearest difference is rating: Homans HVAC Pro+ at 4.7 against Navisizer's 2.4. Homans HVAC Pro+ also leads on update cadence (every 6 weeks vs every 4 months). Navisizer's advantage is monetization model (free vs ad-supported). 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.

Homans HVAC Pro+ holds the better App Store score, 4.7 against 2.4. Both are backed by a comparable volume of ratings — 26 and 70 respectively.

Navisizer ships an update every 4 months, Homans HVAC Pro+ every 6 weeks. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Navisizer | Homans HVAC Pro+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (26 ratings)](https://appshunter.io/ios/app/navisizer/id1327385997/reviews) | **[4.7 (70 ratings)](https://appshunter.io/ios/app/homans-hvac-pro-plus/id1378637418/reviews)** |
| Number of ratings | 26 | **70** |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 21 MB | 165 MB |
| Requires iOS | 17.2 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Navien](https://appshunter.io/developer/1327385996) | [Watsco, Inc.](https://appshunter.io/developer/510378878) |

## What reviewers say

### Navisizer

[App page](https://appshunter.io/ios/app/navisizer/id1327385997)

This app helps size domestic hot water heating systems for residential and commercial use. It calculates operating costs, savings, and generates comprehensive job specifications for Navien NPE Series tankless water heaters.

**Highlights:** Residential system sizing, Operating cost and savings calculation, Commercial application sizing (ASHRAE Hunter Curve), Tankless and tankless with storage solutions, Comprehensive job specification output, Save, print, or email system specs

**Features:** macOS Compatibility

**In-app purchases:** none


### Homans HVAC Pro+

[App page](https://appshunter.io/ios/app/homans-hvac-pro-plus/id1378637418)

This app provides HVAC professionals with tools and information to streamline their work. Access product details, calculators, order status, and warranty information on the go. Find nearby branches, check inventory, and manage parts lists efficiently.

**Highlights:** Real-time order status, Duct calculator, Product availability and pricing, Warranty verification and claims, Parts list and superseded parts, Document access (spec sheets, diagrams), Branch locator and directions

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

**In-app purchases:** none


## Frequently asked questions

### Is Navisizer free?

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

### Is Homans HVAC Pro+ free?

Homans HVAC Pro+ is free to download, with no in-app purchases.

### Which has better reviews, Navisizer or Homans HVAC Pro+?

Homans HVAC Pro+ is rated higher. Navisizer averages 2.4 out of 5 from 26 ratings, while Homans HVAC Pro+ averages 4.7 from 70 ratings.

### Do Navisizer or Homans HVAC Pro+ have ads?

Neither Navisizer nor Homans HVAC Pro+ shows ads.

### Which is updated more often, Navisizer or Homans HVAC Pro+?

Navisizer ships an update every 4 months, and Homans HVAC Pro+ every 6 weeks. Most recently, Navisizer was updated on November 2, 2026 and Homans HVAC Pro+ on November 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*