# Kablo vs DuctChecker

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.

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

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.

## The numbers

| Metric | Kablo | DuctChecker |
| --- | --- | --- |
| Price | $9.99 | **$6.99** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | — | Paid |
| Size | 2 MB | 23 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UMIT CELEN](https://appshunter.io/developer/552863634) | [AIR DESIGN, INC.](https://appshunter.io/developer/923430781) |

## What reviewers say

### Kablo

[App page](https://appshunter.io/ios/app/kablo/id552863631)

**Features:** macOS Compatibility

**In-app purchases:** none


### DuctChecker

[App page](https://appshunter.io/ios/app/ductchecker/id933593987)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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.

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