# Rangen vs ROC A12 OSIRIS

The clearest difference is in-app purchases: ROC A12 OSIRIS at none against Rangen's 1. ROC A12 OSIRIS also leads on iOS requirement (11.0 vs 16.4). Rangen's advantage is update cadence (every 6 weeks vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Rangen sells 1 one-off in-app purchase. ROC A12 OSIRIS asks for nothing beyond the download.

Rangen ships an update every 6 weeks, ROC A12 OSIRIS every 7 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Rangen | ROC A12 OSIRIS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 7 months |
| Monetization | Free with in-app purchases | — |
| Size | 122 MB | 34 MB |
| Requires iOS | 16.4 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jelle van Haaster](https://appshunter.io/developer/967400632) | [CACI bv](https://appshunter.io/developer/961337312) |

## What reviewers say

### Rangen

[App page](https://appshunter.io/ios/app/rangen/id983027165)

Test your knowledge about military headwear, shoulder insignia, and chest decorations. Discover the meanings behind these symbols and expand your understanding of military attire. This educational app makes learning about uniforms engaging and informative.

**Highlights:** Learn about military headwear, Understand shoulder insignia, Discover chest decoration meanings, Test your knowledge, Engaging educational content

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Volledige versie | $0.99 | one-time |


### ROC A12 OSIRIS

[App page](https://appshunter.io/ios/app/roc-a12-osiris/id1578716805)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rangen free?

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

### Is ROC A12 OSIRIS free?

ROC A12 OSIRIS is free to download, with no in-app purchases.

### Do Rangen or ROC A12 OSIRIS have ads?

Neither Rangen nor ROC A12 OSIRIS shows ads.

### Which is updated more often, Rangen or ROC A12 OSIRIS?

Rangen ships an update every 6 weeks, and ROC A12 OSIRIS every 7 months. Most recently, Rangen was updated on October 24, 2026 and ROC A12 OSIRIS on October 25, 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.*