# GfK Link vs hagebau Wallner

The clearest difference is update cadence: hagebau Wallner at every 10 days against GfK Link's every 3 weeks. GfK Link's advantage is iOS requirement (8.0 vs 16.0). 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.

GfK Link ships an update every 3 weeks, hagebau Wallner every 10 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | GfK Link | hagebau Wallner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Size | 38 MB | 186 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GfK SE](https://appshunter.io/developer/649349953) | [Mobile Software Solutions Knoll GmbH](https://appshunter.io/developer/1597122752) |

## What reviewers say

### GfK Link

[App page](https://appshunter.io/ios/app/gfk-link/id1140447940)

**Features:** macOS Compatibility

**In-app purchases:** none


### hagebau Wallner

[App page](https://appshunter.io/ios/app/hagebau-wallner/id6759753975)

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

**In-app purchases:** none


## Frequently asked questions

### Is GfK Link free?

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

### Is hagebau Wallner free?

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

### Do GfK Link or hagebau Wallner have ads?

Neither GfK Link nor hagebau Wallner shows ads.

### Which is updated more often, GfK Link or hagebau Wallner?

GfK Link ships an update every 3 weeks, and hagebau Wallner every 10 days. Most recently, GfK Link was updated on October 29, 2026 and hagebau Wallner 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.*