# 4 vs Gropius Bau

4 and Gropius Bau are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

4 ships an update every 4 days, Gropius Bau every 3 days. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | 4 | Gropius Bau |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gropius-bau/id1631354585/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 3 days** |
| Monetization | — | Free |
| Size | 8 MB | 394 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Holmes](https://appshunter.io/developer/1525696513) | [NEEEU Spaces GmbH](https://appshunter.io/developer/1305109248) |

## What reviewers say

### 4

[App page](https://appshunter.io/ios/app/4-mation/id1525696511)

**Features:** macOS Compatibility

**In-app purchases:** none


### Gropius Bau

[App page](https://appshunter.io/ios/app/gropius-bau/id1631354585)

This AI-powered tool enhances museum visits by translating exhibition texts, providing audio narration, and offering interactive Q&A sessions about artworks. It serves as a digital hub for cultural content, with ongoing development to expand its features and offerings.

**Highlights:** AI-powered text translation, Exhibition text-to-speech, Event subtitle activation, AI Q&A about exhibitions, Digital hub for cultural content

**In-app purchases:** none


## Frequently asked questions

### Is 4 free?

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

### Is Gropius Bau free?

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

### Do 4 or Gropius Bau have ads?

Neither 4 nor Gropius Bau shows ads.

### Which is updated more often, 4 or Gropius Bau?

4 ships an update every 4 days, and Gropius Bau every 3 days. Most recently, 4 was updated on October 25, 2026 and Gropius Bau on October 22, 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.*