Comparison

iBend Offsets vs Duct Construction

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iBend Offsets

Calculate various types of offsets in electrical conduit using common or custom angles. Input distances in fractions for real-time results. Includes an Apple Watch companion app and an inclinometer/level feature.

Highlights
  • Calculate regular, parallel, and rolled offsets
  • Supports common and custom bend angles
  • Fractional input for offset distance
  • Real-time calculation display
  • Apple Watch companion app
  • Inclinometer/Level feature
Features
Read full description

If you bend offsets in electrical conduit or "pipe" as we call it, then this is the app for you. **METRIC IS NOT SUPPORTED** Calculate regular, parallel and rolled offsets in electrical conduit. Use the common 5° ,10°, 22.5°, 30°, 45 °or your custom angle.. Input offset distance in fractions - no need to convert to decimals. Calculations are displayed in fraction in "real time" as you adjust the offset distance or bend angle - no need to press a calculate button to see your results. Apple Watch companion app has been added to quickly solve offset calculations. Inclinometer / Level feature has been added to measure the bend angle as you bend. If you bend more than just offsets we encourage you to consider our other iPhone app : iBend Pipe.

About

Duct Construction

This app helps determine duct construction and reinforcement options based on duct size and system pressure class. It provides condensed lists of suitable options, saving time spent on manual calculations and table lookups. Results are based on industry standards for galvanized steel duct sheets.

Highlights
  • Duct size range from 2" to 120"
  • Pressure classes up to 4 in.wg
  • Calculates duct weights per linear foot
  • Determines required duct gauge and reinforcement spacing
  • Clear illustrations for reinforcement types
  • Simple and effective UI design
Features
Read full description

Get all duct construction and reinforcement options by entering the duct size and system pressure class. The aim of the app is to save time spent browsing through tables and texts to determine suitable options, by relying on the most widely used standards and providing a condensed list of available duct construction options. The results are based on galvanized steel duct sheets conforming to ASTM A653 & A924. The app does not cover all aspects of duct construction, as it is intended as a guide; Reliance on related standards, as well as good engineering sense is the basis for proper design. Features: 1. Duct sizes from 2" to 120" 2. Pressure classes 0.5 in.wg, 1 in.wg, 2 in.wg, 3 in.wg and 4 in.wg. 3. Provides the duct weights for each option per linear foot. 4. Provides required duct gauge and reinforcement spacing. 5. Clear illustration for each reinforcement type, as well as dimensions. 6. Simple and effective UI design. Roadmap / Upcoming updates: 1. SI units. 2. More pressure class options. 3. User will be able to save and retreive duct data for future reference. 3. More Reinforcement options, including tie-rodding. Request a feature: welmurr@icloud.com

Screenshots

iBend Offsets4 screens
Duct Construction4 screens

Verdict

The call

The clearest difference is review sentiment: iBend Offsets at 74% against Duct Construction's 0%. iBend Offsets also leads on rating (4.3 vs 1.0) and ratings volume (3 vs 1). Duct Construction's advantage is price ($0.99 vs $1.99). On update cadence, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

iBend Offsets costs $1.99 and Duct Construction $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

iBend Offsets holds the better App Store score, 4.3 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 74% of iBend Offsets's written reviews are positive against 0% of Duct Construction's.

UpkeepUpdate frequency

iBend Offsets ships an update every 7 months, Duct Construction every 10 months. The most recent releases landed on September 21, 2026 and September 25, 2026 respectively.

Scorecard4 real differences · 7 level
iBend Offsets versus Duct Construction: the parameters behind the verdict, then further details
ParameteriBend OffsetsDuct Construction
Price$1.99$0.99 — better
Rating4.3 (3 ratings) — better1.0 (1 ratings)
Positive reviews74.1% of reviews — better0.0% of reviews
Number of ratings3 — better1
Update frequencyEvery 7 months — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#200#140 — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.617.6
Further details — not scored
Size2 MB1 MB
Age rating4+4+
DeveloperFrancisco AlcalaWassim Murr

Customer experience

iBend Offsets

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews27 reviews
Positive74.1%
Neutral11.1%
Negative14.8%

Duct Construction

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

iBend Offsets

No in-app purchases

None

Duct Construction

No in-app purchases

Questions

Is iBend Offsets free?
iBend Offsets costs $1.99, with no in-app purchases.
Is Duct Construction free?
Duct Construction costs $0.99, with no in-app purchases.
Which has better reviews, iBend Offsets or Duct Construction?
iBend Offsets is rated higher. iBend Offsets averages 4.3 out of 5 from 3 ratings, while Duct Construction averages 1.0 from 1 ratings.
Do iBend Offsets or Duct Construction have ads?
Neither iBend Offsets nor Duct Construction shows ads.
Which is updated more often, iBend Offsets or Duct Construction?
iBend Offsets ships an update every 7 months, and Duct Construction every 10 months. Most recently, iBend Offsets was updated on September 21, 2026 and Duct Construction on September 25, 2026.
Which is more popular, iBend Offsets or Duct Construction?
iBend Offsets currently peaks at #200 in the App Store charts, and Duct Construction at #140. Chart position reflects recent download velocity rather than total install base.

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