Comparison

Kablo vs DuctChecker

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

Head to head
About

Kablo

Features
Read full description

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 ( nomΔ±nal 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 300mmΒ² . 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

DuctChecker

Easily calculate duct dimensions using various engineering methods like constant pressure, static pressure regain, total pressure, and velocity. This tool simplifies complex duct design calculations, typically found in flow diagrams or slide rules.

Highlights
  • Constant pressure method calculation
  • Static pressure regain method
  • Total pressure method
  • Velocity method
  • Duct dimension determination
  • Simplified duct design
Features
Read full description

To determine the size of the duct constant pressure method, static pressure regain method, total pressure method, velocity method. Generally uses constant pressure method. This constant pressure method is how to determine the duct dimensions using the same value per 1 m on all duct friction loss. Usually determined by flow diagrams or duct design for slide rules. You can easily determine the duct by using this program.

Screenshots

Kablo4 screens
DuctChecker3 screens

Verdict

The call

The clearest difference is price: DuctChecker at $6.99 against Kablo's $9.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Kablo costs $9.99 and DuctChecker $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Kablo ships an update every 3 months, DuctChecker every 4 months. The most recent releases landed on May 16, 2026 and September 7, 2026 respectively.

Scorecard1 real difference Β· 7 level
Kablo versus DuctChecker: the parameters behind the verdict, then further details
ParameterKabloDuctChecker
Price$9.99$6.99 β€” better
Positive reviewsβ€”0.0% of reviews
Update frequencyEvery 3 months β€” betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
Monetizationβ€”Paid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details β€” not scored
Size2 MB23 MB
Age rating4+4+
DeveloperUMIT CELENAIR DESIGN, INC.

In-app purchases

None

Kablo

No in-app purchases

None

DuctChecker

No in-app purchases

Questions

Is Kablo free?
Kablo costs $9.99, with no in-app purchases.
Is DuctChecker free?
DuctChecker costs $6.99, with no in-app purchases.
Do Kablo or DuctChecker have ads?
Neither Kablo nor DuctChecker shows ads.
Which is updated more often, Kablo or DuctChecker?
Kablo ships an update every 3 months, and DuctChecker every 4 months. Most recently, Kablo was updated on May 16, 2026 and DuctChecker on September 7, 2026.

Other comparisons