# Bau vs koppla

The clearest difference is update cadence: koppla at every 5 weeks against Bau's every 5 months. 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.

Bau ships an update every 5 months, koppla every 5 weeks. The most recent releases landed on June 24, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Bau | koppla |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 2 MB | 57 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Open Experience GmbH](https://appshunter.io/developer/952266236) | [koppla GmbH](https://appshunter.io/developer/1458971276) |

## What reviewers say

### Bau

[App page](https://appshunter.io/ios/app/bau-mangel/id952266237)

Streamline construction defect management with this mobile service. Capture issues on-site with photos, freehand notes, and text modules, automating documentation and saving significant time.

**Highlights:** On-site defect capture, Photo and freehand notes, Automated documentation, Time-saving text modules, Defect assignment and tracking, Email notifications and reports

**In-app purchases:** none


### koppla

[App page](https://appshunter.io/ios/app/koppla/id1458971277)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bau free?

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

### Is koppla free?

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

### Do Bau or koppla have ads?

Neither Bau nor koppla shows ads.

### Which is updated more often, Bau or koppla?

Bau ships an update every 5 months, and koppla every 5 weeks. Most recently, Bau was updated on June 24, 2026 and koppla on September 15, 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.*