# Der Komet vs OSTi

The clearest difference is in-app purchases: OSTi at none against Der Komet's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Der Komet sells 10 in-app purchases, starting at $14.99 per 3 months. OSTi asks for nothing beyond the download.

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

## The numbers

| Metric | Der Komet | OSTi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 7 months** |
| Size | 188 MB | 182 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Komet Druck- und Verlagshaus GmbH](https://appshunter.io/developer/1726374543) | [C. Maurer Fachmedien GmbH & Co. KG](https://appshunter.io/developer/1039754955) |

## What reviewers say

### Der Komet

[App page](https://appshunter.io/ios/app/der-komet/id6476296693)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Freizeitparks 3 Monatsabo | $14.99 | per 3 months |
| Freizeitparks 6 Monatsabo | $24.99 | per 6 months |
| Der Komet 3 Monatsabo | $39.99 | per 3 months |
| Freizeitparks 12 Monatsabo | $49.99 | per year |
| Der Komet 6 Monatsabo | $79.99 | per 6 months |
| DER KOMET 12 Monatsabo | $149.99 | per year |
| komet5829 | $3.99 | one-time |
| komet5824 | $3.99 | one-time |
| komet5832 | $3.99 | one-time |
| komet5831 | $3.99 | 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 Komet free?

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

### Is OSTi free?

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

### Do Der Komet or OSTi have ads?

Neither Der Komet nor OSTi shows ads.

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

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