# 123quality vs MPP Viewer

The clearest difference is price: 123quality at Free against MPP Viewer's $9.99. 123quality also leads on iOS requirement (13.0 vs 17.0). MPP Viewer's advantage is update cadence (weekly vs monthly). On ads, in-app purchases and device support there is nothing between them.

123quality is free to download; MPP Viewer costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

123quality ships an update monthly, MPP Viewer weekly. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 123quality | MPP Viewer |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free | — |
| Size | 61 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [123erfasst.de GmbH](https://appshunter.io/developer/946458429) | [Cardinate Consulting LLC](https://appshunter.io/developer/1851110860) |

## What reviewers say

### 123quality

[App page](https://appshunter.io/ios/app/123quality/id1457830788)

Streamline construction site management by digitally tracking defects and tasks. Capture relevant data, assign tickets, and share information with stakeholders in real-time. Supports offline data entry and easy export for improved project quality and time savings.

**Highlights:** Digital quality and defect management, Task and defect ticket creation, Photo documentation with location tagging, Offline data capture, Real-time data synchronization, Stakeholder collaboration, Customizable ticket types

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

**In-app purchases:** none


### MPP Viewer

[App page](https://appshunter.io/ios/app/mpp-viewer/id6760091078)

**In-app purchases:** none


## Frequently asked questions

### Is 123quality free?

123quality is free to download, with no in-app purchases.

### Is MPP Viewer free?

MPP Viewer costs $9.99, with no in-app purchases.

### Do 123quality or MPP Viewer have ads?

Neither 123quality nor MPP Viewer shows ads.

### Which is updated more often, 123quality or MPP Viewer?

123quality ships an update monthly, and MPP Viewer weekly. Most recently, 123quality was updated on October 6, 2026 and MPP Viewer on October 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.*