# Hattert vs Calden

Hattert and Calden 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.

Hattert ships an update every 26 months, Calden every 39 months. The most recent releases landed on October 21, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Hattert | Calden |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 26 months** | Every 39 months |
| Size | 13 MB | 12 MB |
| Requires iOS | 15 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Verbandsgemeinde Hachenburg](https://appshunter.io/developer/1625636202) | [apicodo GmbH](https://appshunter.io/developer/1169099711) |

## What reviewers say

### Hattert

[App page](https://appshunter.io/ios/app/hattert/id1626091084)

**Features:** Vision Pro support

**In-app purchases:** none


### Calden

[App page](https://appshunter.io/ios/app/calden/id6450459991)

**In-app purchases:** none


## Frequently asked questions

### Is Hattert free?

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

### Is Calden free?

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

### Do Hattert or Calden have ads?

Neither Hattert nor Calden shows ads.

### Which is updated more often, Hattert or Calden?

Hattert ships an update every 26 months, and Calden every 39 months. Most recently, Hattert was updated on October 21, 2026 and Calden on October 8, 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.*