# Der Dom vs OSTi

The clearest difference is in-app purchases: OSTi at none against Der Dom's 20. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Der Dom sells 20 one-off in-app purchases. OSTi asks for nothing beyond the download.

Der Dom ships an update every 9 months, OSTi every 7 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Der Dom | OSTi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 7 months** |
| Size | 160 MB | 182 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bonifatius GmbH](https://appshunter.io/developer/1733450385) | [C. Maurer Fachmedien GmbH & Co. KG](https://appshunter.io/developer/1039754955) |

## What reviewers say

### Der Dom

[App page](https://appshunter.io/ios/app/der-dom/id6478595157)

**Features:** macOS Compatibility

**In-app purchases (20)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Der Dom 28 2026 | $1.99 | one-time |
| Der Dom 30 2026 | $1.99 | one-time |
| Der Dom 26 2026 | $1.99 | one-time |
| Der Dom 29 2026 | $1.99 | one-time |
| Der Dom 31 2026 | $1.99 | one-time |
| Der Dom 34 2026 | $1.99 | one-time |
| Der Dom 24 2026 | $1.99 | one-time |
| Der Dom 32 2026 | $1.99 | one-time |
| Der Dom 33 2026 | $1.99 | one-time |
| Der Dom 35 2026 | $1.99 | one-time |
| Der Dom 21/24 | $1.99 | one-time |
| Der Dom 25/24 | $1.99 | one-time |
| Der Dom 27/24 | $1.99 | one-time |
| Der Dom 26/24 | $1.99 | one-time |
| Der Dom 24/24 | $1.99 | one-time |
| Der Dom 30/24 | $1.99 | one-time |
| Der Dom 28/24 | $1.99 | one-time |
| Der Dom 29/24 | $1.99 | one-time |
| Der Dom 31/24 | $1.99 | one-time |
| Der Dom 32/24 | $1.99 | one-time |


### OSTi

[App page](https://appshunter.io/ios/app/osti/id6755822084)

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

**In-app purchases:** none


## Frequently asked questions

### Is Der Dom free?

Der Dom is free to download, with in-app purchases available.

### Is OSTi free?

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

### Do Der Dom or OSTi have ads?

Neither Der Dom nor OSTi shows ads.

### Which is updated more often, Der Dom or OSTi?

Der Dom ships an update every 9 months, and OSTi every 7 months. Most recently, Der Dom was updated on October 15, 2026 and OSTi on October 10, 2026.

---

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