# GFZ vs BDK

The clearest difference is iOS requirement: GFZ at 13.0 against BDK's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

GFZ ships an update every 10 months, BDK every 6 months. The most recent releases landed on September 18, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | GFZ | BDK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 months** |
| Size | 13 MB | 36 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Link IT isi GmbH](https://appshunter.io/developer/1527560604) | [Bund Deutscher Kriminalbeamter](https://appshunter.io/developer/1737796676) |

## What reviewers say

### GFZ

[App page](https://appshunter.io/ios/app/gfz-app/id1628755568)

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

**In-app purchases:** none


### BDK

[App page](https://appshunter.io/ios/app/bdk/id6479994884)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GFZ free?

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

### Is BDK free?

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

### Do GFZ or BDK have ads?

Neither GFZ nor BDK shows ads.

### Which is updated more often, GFZ or BDK?

GFZ ships an update every 10 months, and BDK every 6 months. Most recently, GFZ was updated on September 18, 2026 and BDK on September 9, 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.*