Easy Offset vs Ductulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Easy Offset
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.
- 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
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Easy Offset is an easy to use program designed for the HVAC industry that calculates cut joints, elbow centerlines, and overall lengths for offsets of any angle. Saves time: -faster than using a calculator -improved accuracy -no multipliers or trig formulas to remember -reduces errors -minimizes cutting in the field and wasted material -use any angle -useful for field layout and detailing Types of Offsets: -round elbows -rectangular elbows with radius heel and throat -rectangular elbows with straight heel and throat -round taps on an angle -rolled nineties -wye branches
Ductulator
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.
- 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
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Size HVAC ducts instantly using airflow, friction or velocity. Get accurate duct dimensions in seconds — no charts required. • Get a range of suitable duct sizes based on friction rate or velocity. • Get multiple valid duct dimensions instantly. • Tap on Friction Rate or Velocity to toggle between calculation methods. • IP and SI units. • Detailed sizing mode to adjust the duct dimensions and air flow rates. • Supports rectangular, circular and flexible ducts. • Automatic friction and velocity updates. Calculations are based on standard air 0.075 lb/ft3 (1.2 kg/m3) in clean galvanized steel or non-metallic flexible ducts. Any feedback is welcome, and will be the basis for future updates.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Easy Offset | Ductulator |
|---|---|---|
| Price | $4.99 | $3.99 — better |
| Rating | 4.3 (25 ratings) | 4.7 (317 ratings) — better |
| Positive reviews | 62.5% of reviews — better | 50.0% of reviews |
| Number of ratings | 25 | 317 — better |
| Update frequency | Every 9 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #50 | #44 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.1 — better | 18.6 |
| Further details — not scored | ||
| Size | 33 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Allen Sieler | Wassim Murr |
Customer experience
Easy Offset
Ductulator
In-app purchases
Easy Offset
No in-app purchases
Ductulator
No in-app purchases
