# krz DataBox v4 vs BF

The clearest difference is update cadence: BF at every 6 days against krz DataBox v4's every 3 months. krz DataBox v4's advantage is iOS requirement (9.0 vs 15.0). 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.

krz DataBox v4 ships an update every 3 months, BF every 6 days. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | krz DataBox v4 | BF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Size | 39 MB | 34 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [krz Kommunales Rechenzentrum Minden-Ravensberg/Lippe](https://appshunter.io/developer/475738292) | [Maik Wrase](https://appshunter.io/developer/6806687223) |

## What reviewers say

### krz DataBox v4

[App page](https://appshunter.io/ios/app/krz-databox-v4/id1189516679)

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

**In-app purchases:** none


### BF

[App page](https://appshunter.io/ios/app/bf-tagde/id6806687221)

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

**In-app purchases:** none


## Frequently asked questions

### Is krz DataBox v4 free?

krz DataBox v4 is free to download, with no in-app purchases.

### Is BF free?

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

### Do krz DataBox v4 or BF have ads?

Neither krz DataBox v4 nor BF shows ads.

### Which is updated more often, krz DataBox v4 or BF?

krz DataBox v4 ships an update every 3 months, and BF every 6 days. Most recently, krz DataBox v4 was updated on October 6, 2026 and BF on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*