# Starwash vs DUApp

The clearest difference is update cadence: Starwash at every 3 months against DUApp's every 6 months. Starwash also leads on iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Starwash ships an update every 3 months, DUApp every 6 months. The most recent releases landed on September 8, 2026 and June 22, 2026 respectively.

## The numbers

| Metric | Starwash | DUApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.8 (4 ratings)](https://appshunter.io/ios/app/duapp/id1474224031/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | — | Free |
| Size | 14 MB | 12 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Feediu](https://appshunter.io/developer/1561934628) | [Imprensa Nacional-Casa da Moeda SA](https://appshunter.io/developer/1367188525) |

## What reviewers say

### Starwash

[App page](https://appshunter.io/ios/app/starwash/id1269563086)

**In-app purchases:** none


### DUApp

[App page](https://appshunter.io/ios/app/duapp/id1474224031)

This app reads information from Portugal's certified vehicle registration document using UniQode®. It provides intuitive and friendly access to the document's complete details. Note that it does not replace the physical document.

**Highlights:** Read UniQode® information, Access vehicle document details, Intuitive interface, Friendly user experience, Digital access to document data

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Starwash free?

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

### Is DUApp free?

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

### Do Starwash or DUApp have ads?

Neither Starwash nor DUApp shows ads.

### Which is updated more often, Starwash or DUApp?

Starwash ships an update every 3 months, and DUApp every 6 months. Most recently, Starwash was updated on September 8, 2026 and DUApp on June 22, 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.*