# Easy Offset vs Ductulator

The clearest difference is rating: Ductulator at 4.7 against Easy Offset's 4.3. Ductulator also leads on update cadence (every 2 months vs every 9 months) and ratings volume (317 vs 25). Easy Offset's advantage is review sentiment (63% vs 50%) and iOS requirement (9.1 vs 18.6). On ads, in-app purchases, chart position and device support there is nothing between them.

Easy Offset costs $4.99 and Ductulator $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 4.3. That said, the two scores are not equally well evidenced: Ductulator has 317 ratings behind it against 25, so its average is the more settled of the two. Written reviews complicate that: 63% of Easy Offset's written reviews are positive against 50% of Ductulator's, so the app with the better star average is not the one people write more warmly about.

Easy Offset ships an update every 9 months, Ductulator every 2 months. Both last shipped on October 13, 2026.

## The numbers

| Metric | Easy Offset | Ductulator |
| --- | --- | --- |
| Price | $4.99 | **$3.99** |
| Rating | [4.3 (25 ratings)](https://appshunter.io/ios/app/easy-offset/id412835048/reviews) | **[4.7 (317 ratings)](https://appshunter.io/ios/app/ductulator-duct-sizing/id1474939475/reviews)** |
| Number of ratings | 25 | **317** |
| Positive reviews | **62.5% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Best chart rank | **#37** | #43 |
| Size | 33 MB | 1 MB |
| Requires iOS | **9.1** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Allen Sieler](https://appshunter.io/developer/412835051) | [Wassim Murr](https://appshunter.io/developer/1474939474) |

## What reviewers say

### Easy Offset

[App page](https://appshunter.io/ios/app/easy-offset/id412835048)

**Currently charting:** #37 Top Paid · Productivity (US App Store)

This application simplifies HVAC calculations for offsets, including cut joints, elbow centerlines, and lengths for any angle. It offers improved accuracy and saves time by eliminating the need for manual calculations and reducing material waste in the field.

**Highlights:** Calculates cut joints, Calculates elbow centerlines, Calculates overall lengths for offsets, Supports any angle offsets, Handles various elbow types (round, rectangular), Supports round taps and wye branches

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

**In-app purchases:** none


### Ductulator

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

**Currently charting:** #43 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


## Frequently asked questions

### Is Easy Offset free?

Easy Offset costs $4.99, with no in-app purchases.

### Is Ductulator free?

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

### Which has better reviews, Easy Offset or Ductulator?

Ductulator is rated higher. Easy Offset averages 4.3 out of 5 from 25 ratings, while Ductulator averages 4.7 from 317 ratings.

### Do Easy Offset or Ductulator have ads?

Neither Easy Offset nor Ductulator shows ads.

### Which is updated more often, Easy Offset or Ductulator?

Easy Offset ships an update every 9 months, and Ductulator every 2 months. Most recently, Easy Offset was updated on October 13, 2026 and Ductulator on October 13, 2026.

### Which is more popular, Easy Offset or Ductulator?

Easy Offset currently peaks at #37 in the App Store charts, and Ductulator at #43. Chart position reflects recent download velocity rather than total install base.

---

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