# Ductulator vs YJACK VIEW

The clearest difference is price: YJACK VIEW at Free against Ductulator's $3.99. YJACK VIEW also leads on iOS requirement (14.0 vs 18.6). Ductulator's advantage is rating (4.7 vs 2.8) and review sentiment (50% vs 25%). On ads, in-app purchases, monetization model and device support there is nothing between them.

YJACK VIEW is free to download; Ductulator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Ductulator holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: Ductulator has 317 ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 50% of Ductulator's written reviews are positive against 25% of YJACK VIEW's.

Ductulator ships an update every 2 months, YJACK VIEW every 5 months. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Ductulator | YJACK VIEW |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.7 (317 ratings)](https://appshunter.io/ios/app/ductulator-duct-sizing/id1474939475/reviews)** | [2.8 (18 ratings)](https://appshunter.io/ios/app/yjack-view/id1492358956/reviews) |
| Number of ratings | **317** | 18 |
| Positive reviews | **50.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | Free |
| Best chart rank | **#40** | — |
| Size | 1 MB | 19 MB |
| Requires iOS | 18.6 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Wassim Murr](https://appshunter.io/developer/1474939474) | [YELLOW JACKET](https://appshunter.io/developer/924701171) |

## What reviewers say

### Ductulator

[App page](https://appshunter.io/ios/app/ductulator-duct-sizing/id1474939475)

**Currently charting:** #40 Top Paid · Productivity (US App Store)

Instantly calculate HVAC duct sizes based on airflow, friction rate, or velocity. This tool provides accurate duct dimensions in seconds without needing charts, supporting various duct types and units.

**Highlights:** Instant duct sizing, Friction rate or velocity calculation, Multiple valid duct dimensions, IP and SI units support, Detailed sizing mode, Rectangular, circular, and flexible ducts

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

**In-app purchases:** none


### YJACK VIEW

[App page](https://appshunter.io/ios/app/yjack-view/id1492358956)

This app provides a comprehensive HVAC/R diagnostic solution by integrating with specialized hardware. It allows users to view live data, create and share service reports, and perform detailed system analysis for pressure, temperature, evacuation, and more.

**Highlights:** Live data monitoring, Customizable PDF service reports, Enhanced datalogging, Pressure and temperature analysis, Evacuation monitoring, Psychrometric analysis, Electrical readings

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ductulator free?

Ductulator costs $3.99, with no in-app purchases.

### Is YJACK VIEW free?

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

### Which has better reviews, Ductulator or YJACK VIEW?

Ductulator is rated higher. Ductulator averages 4.7 out of 5 from 317 ratings, while YJACK VIEW averages 2.8 from 18 ratings.

### Do Ductulator or YJACK VIEW have ads?

Neither Ductulator nor YJACK VIEW shows ads.

### Which is updated more often, Ductulator or YJACK VIEW?

Ductulator ships an update every 2 months, and YJACK VIEW every 5 months. Most recently, Ductulator was updated on September 22, 2026 and YJACK VIEW on September 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.*