Comparison

Kablo 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

Kablo

Features
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Kablo, calculates cable type and size, finds circuit breaker nominal break current and draws single line diagrams for main distribution or MCC panels power outputs for 3P or 1P 50Hz electrical circuits. Because you can change parameters easily and see the effect of that changes immediately, you might be able to make better decision selecting right cables or breakers. Using Kablo, you can make one quick calculation for one load or you can make calculation for several projects with up to 50 loads then you can send results as single line diagrams which can be opened by well known CAD softwares or you may prefer PDF output could be send by email or opened by iBook or any other PDF reader installed to your device. In case you use project option, the parameters you input is kept at your device. For calculations you have to input load parameters as usual but app supply comman parameters as default all you must do is changing defaults according to your needs. There is some difference about In ( nomınal breking current for breaker) calculation; Application finds the min nominal breaker current (In) but you may input higher current because breaker could be already installed or there could be a special load requires different In. Unless you input breaking current again at next calculation App finds In itself so inputing breaker current (In) as last parameter, may be a good idea. Application finds multicore cables up to 300mm² . Calculated cables should be considered as minumum cable size could be used. Also, never forget that, min and max short circuit currents are not taken into account yet. Findings of Kablo should be taken account as reference source and checked by an engineer.

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

Kablo4 screens
Duct Construction4 screens

Verdict

The call

The clearest difference is price: Duct Construction at $0.99 against Kablo's $9.99. Kablo's advantage is update cadence (every 3 months vs every 10 months) and iOS requirement (15.0 vs 17.6). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Kablo costs $9.99 and Duct Construction $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Kablo ships an update every 3 months, Duct Construction every 10 months. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Kablo versus Duct Construction: the parameters behind the verdict, then further details
ParameterKabloDuct Construction
Price$9.99$0.99 — better
Rating—1.0 (1 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 3 months — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size2 MB1 MB
Age rating4+4+
DeveloperUMIT CELENWassim Murr

In-app purchases

None

Kablo

No in-app purchases

None

Duct Construction

No in-app purchases

Questions

Is Kablo free?
Kablo costs $9.99, with no in-app purchases.
Is Duct Construction free?
Duct Construction costs $0.99, with no in-app purchases.
Do Kablo or Duct Construction have ads?
Neither Kablo nor Duct Construction shows ads.
Which is updated more often, Kablo or Duct Construction?
Kablo ships an update every 3 months, and Duct Construction every 10 months. Most recently, Kablo was updated on October 18, 2026 and Duct Construction on October 24, 2026.

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