# Product Support vs DCTU

The clearest difference is iOS requirement: Product Support at 8.0 against DCTU's 12.4. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Product Support against 5.0 for DCTU. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Product Support ships an update every 7 months, DCTU every 5 months. The most recent releases landed on June 1, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Product Support | DCTU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/product-support/id1463075555/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/dctu/id1590757019/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | Free | Free |
| Size | 164 MB | 55 MB |
| Requires iOS | **8.0** | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Williams International Co., LLC](https://appshunter.io/developer/1024732815) | [Pratt & Whitney Canada Cie](https://appshunter.io/developer/1468490552) |

## What reviewers say

### Product Support

[App page](https://appshunter.io/ios/app/product-support/id1463075555)

This application provides owners and operators of specific engines with access to essential information and services. It includes features like locating authorized service centers, scheduling maintenance, and accessing instructional videos.

**Highlights:** Authorized Service Center Locator, Schedule Maintenance, Request Inspection Kits, Instructional Video Library, Contact Information, Product Support Portal Access

**In-app purchases:** none


### DCTU

[App page](https://appshunter.io/ios/app/dctu/id1590757019)

This application facilitates communication with specific engine hardware for maintenance tasks. It allows users to view and modify engine parameters, retrieve diagnostic data, and manage engine module information. The tool supports real-time data collection and offline data entry.

**Highlights:** View/Change EEC and DCTU parameters, Retrieve Events, Exceedances & Faults (EEF), Monitor DCTU health status, Perform live data diagnostics, Scan barcodes for module changes, Generate offline LRU/Engine Module data files

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Product Support free?

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

### Is DCTU free?

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

### Which has better reviews, Product Support or DCTU?

Product Support and DCTU are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Product Support or DCTU have ads?

Neither Product Support nor DCTU shows ads.

### Which is updated more often, Product Support or DCTU?

Product Support ships an update every 7 months, and DCTU every 5 months. Most recently, Product Support was updated on June 1, 2026 and DCTU on September 10, 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.*