# Navisizer vs Conduit HVAC Toolkit

The clearest difference is review sentiment: Conduit HVAC Toolkit at 100% against Navisizer's 13%. Conduit HVAC Toolkit also leads on rating (4.9 vs 2.4) and update cadence (every 3 weeks vs every 4 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.

Conduit HVAC Toolkit holds the better App Store score, 4.9 against 2.4. Both are backed by a comparable volume of ratings — 26 and 39 respectively. Written reviews point the same way: 13% of Navisizer's written reviews are positive against 100% of Conduit HVAC Toolkit's.

Navisizer ships an update every 4 months, Conduit HVAC Toolkit every 3 weeks. The most recent releases landed on October 22, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Navisizer | Conduit HVAC Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (26 ratings)](https://appshunter.io/ios/app/navisizer/id1327385997/reviews) | **[4.9 (39 ratings)](https://appshunter.io/ios/app/conduit-hvac-toolkit/id6444496270/reviews)** |
| Number of ratings | 26 | **39** |
| Positive reviews | 12.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 21 MB | 85 MB |
| Requires iOS | **17.2** | 18.6 |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Navien](https://appshunter.io/developer/1327385996) | [Conduit Tech](https://appshunter.io/developer/1654960982) |

## 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


### Conduit HVAC Toolkit

[App page](https://appshunter.io/ios/app/conduit-hvac-toolkit/id6444496270)

This iPad app empowers HVAC contractors to quickly scan homes, generate 3D models, and perform certified load calculations. Visualize installations with augmented reality and create professional reports to build customer trust and close more sales.

**Highlights:** LiDAR-powered home scanning, 3D model creation, ACCA-certified load calculations, Augmented reality equipment visualization, Professional report generation, Faster sales process

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Navisizer free?

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

### Is Conduit HVAC Toolkit free?

Conduit HVAC Toolkit is free to download, with no in-app purchases.

### Which has better reviews, Navisizer or Conduit HVAC Toolkit?

Conduit HVAC Toolkit is rated higher. Navisizer averages 2.4 out of 5 from 26 ratings, while Conduit HVAC Toolkit averages 4.9 from 39 ratings.

### Do Navisizer or Conduit HVAC Toolkit have ads?

Neither Navisizer nor Conduit HVAC Toolkit shows ads.

### Which is updated more often, Navisizer or Conduit HVAC Toolkit?

Navisizer ships an update every 4 months, and Conduit HVAC Toolkit every 3 weeks. Most recently, Navisizer was updated on October 22, 2026 and Conduit HVAC Toolkit on October 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.*