# Triple J Ductwork vs Transitions Layouts

The clearest difference is rating: Transitions Layouts at 5.0 against Triple J Ductwork's 4.0. Triple J Ductwork's advantage is in-app purchases (none vs 1) and ratings volume (3 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Transitions Layouts sells 1 one-off in-app purchase. Triple J Ductwork asks for nothing beyond the download.

Transitions Layouts holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Triple J Ductwork ships an update every 5 months, Transitions Layouts every 9 months. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Triple J Ductwork | Transitions Layouts |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/triple-j-ductwork/id1156907795/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/transitions-layouts/id6757512792/reviews)** |
| Number of ratings | **3** | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 9 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 24 MB | 47 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BiznetIS Net Inc](https://appshunter.io/developer/682007657) | [Sachinbhai Surani](https://appshunter.io/developer/1838685550) |

## What reviewers say

### Triple J Ductwork

[App page](https://appshunter.io/ios/app/triple-j-ductwork/id1156907795)

This app allows users to request quotes for custom metal parts, including ductwork and signs. It features a part-picking tool and a space to input specific measurements for fabrication projects.

**Highlights:** Custom part quoting, Part picking tool, Measurement specification, Sheet metal fabrication, Ductwork services

**Features:** macOS Compatibility

**In-app purchases:** none


### Transitions Layouts

[App page](https://appshunter.io/ios/app/transitions-layouts/id6757512792)

This utility app generates precise layouts for various transition shapes used in fabrication and HVAC. It simplifies complex calculations for square-to-round, rectangular-to-round, and pyramid designs, reducing manual drafting and improving accuracy.

**Highlights:** Square to Round/Rectangular Layout, Round to Square/Rectangular Layout, Pyramid and Truncated Pyramid Layout, Multiple Joint Configurations, Flexible Line Divisions, Accurate Input Parameters

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $9.99 | one-time |


## Frequently asked questions

### Is Triple J Ductwork free?

Triple J Ductwork is free to download, with no in-app purchases.

### Is Transitions Layouts free?

Transitions Layouts is free to download, with in-app purchases available.

### Which has better reviews, Triple J Ductwork or Transitions Layouts?

Transitions Layouts is rated higher. Triple J Ductwork averages 4.0 out of 5 from 3 ratings, while Transitions Layouts averages 5.0 from 1 ratings.

### Do Triple J Ductwork or Transitions Layouts have ads?

Neither Triple J Ductwork nor Transitions Layouts shows ads.

### Which is updated more often, Triple J Ductwork or Transitions Layouts?

Triple J Ductwork ships an update every 5 months, and Transitions Layouts every 9 months. Most recently, Triple J Ductwork was updated on November 6, 2026 and Transitions Layouts on October 31, 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.*