# DUApp vs Asprela + sustentável

DUApp and Asprela + sustentável are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

DUApp ships an update every 6 months, Asprela + sustentável every 9 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | DUApp | Asprela + sustentável |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.6 (5 ratings)](https://appshunter.io/ios/app/duapp/id1474224031/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 9 months |
| Monetization | Free | — |
| Size | 12 MB | 35 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Imprensa Nacional-Casa da Moeda S.A.](https://appshunter.io/developer/1367188525) | [Greenvolt](https://appshunter.io/developer/1679783880) |

## What reviewers say

### 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


### Asprela + sustentável

[App page](https://appshunter.io/ios/app/asprela-plus-sustentavel/id6737225179)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DUApp free?

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

### Is Asprela + sustentável free?

Asprela + sustentável is free to download, with no in-app purchases.

### Do DUApp or Asprela + sustentável have ads?

Neither DUApp nor Asprela + sustentável shows ads.

### Which is updated more often, DUApp or Asprela + sustentável?

DUApp ships an update every 6 months, and Asprela + sustentável every 9 months. Most recently, DUApp was updated on October 24, 2026 and Asprela + sustentável on October 25, 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.*