# Duct vs TouchJW v2

The clearest difference is review sentiment: Duct at 100% against TouchJW v2's 28%. Duct also leads on in-app purchases (none vs 4) and iOS requirement (11.4 vs 15.6). TouchJW v2's advantage is update cadence (every 5 weeks vs every 16 months). On price, ads and device support there is nothing between them.

Both are free to download. TouchJW v2 sells 4 in-app purchases, starting at $12.99 per 2 months. Duct asks for nothing beyond the download.

Duct ships an update every 16 months, TouchJW v2 every 5 weeks. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Duct | TouchJW v2 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 27.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 29 MB |
| Requires iOS | **11.4** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Izumi Consulting,Inc.](https://appshunter.io/developer/735908925) | [Hideyuki Miyanishi](https://appshunter.io/developer/717594962) |

## What reviewers say

### Duct

[App page](https://appshunter.io/ios/app/duct-fit/id735908922)

This application simplifies the selection of duct sizes using intuitive design and simple operations. It calculates appropriate duct sizes based on airflow, standard static pressure, and air velocity, supporting both rectangular and round ducts.

**Highlights:** Intuitive design for easy duct size selection, Calculates duct size based on airflow, static pressure, and velocity, Supports both rectangular and round ducts, Visual representation of selected duct shapes, Customizable warning and upper limits for aspect ratio and air velocity, Set default standard static pressure

**Features:** macOS Compatibility

**In-app purchases:** none


### TouchJW v2

[App page](https://appshunter.io/ios/app/touchjw-v2/id996794955)

View and edit CAD data files on your iPhone or iPad. Measure distances, calculate areas, and add annotations like shapes and photos. Export to PDF and print via AirPrint.

**Highlights:** View JW_CAD/Jw_win data files, Measure distances and calculate areas, Edit annotation data, Add photos and freehand lines, Export annotations to PDF, Print via AirPrint, Import files via iTunes, cloud apps, or email

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 制限解除その１ | $12.99 | per 2 months |
| 制限解除その２ | $16.99 | per 6 months |
| TouchJWv2.12MonthUnlock | $34.99 | per year |
| ファイルサイズ制限解除 | $99.99 | one-time |


## Frequently asked questions

### Is Duct free?

Duct is free to download, with no in-app purchases.

### Is TouchJW v2 free?

TouchJW v2 is free to download, with in-app purchases available.

### Do Duct or TouchJW v2 have ads?

Neither Duct nor TouchJW v2 shows ads.

### Which is updated more often, Duct or TouchJW v2?

Duct ships an update every 16 months, and TouchJW v2 every 5 weeks. Most recently, Duct was updated on October 6, 2026 and TouchJW v2 on October 13, 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.*