# Firearms Knowledge Compact vs Read4G

The clearest difference is update cadence: Firearms Knowledge Compact at every 5 days against Read4G's every 2 weeks. Firearms Knowledge Compact also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Firearms Knowledge Compact sells 1 one-off in-app purchase and Read4G sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Firearms Knowledge Compact ships an update every 5 days, Read4G every 2 weeks. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Firearms Knowledge Compact | Read4G |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Size | 113 MB | 11 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Christian Hermann](https://appshunter.io/developer/1882361365) | [Lucrecia Karina Abasto](https://appshunter.io/developer/6774181481) |

## What reviewers say

### Firearms Knowledge Compact

[App page](https://appshunter.io/ios/app/firearms-knowledge-compact/id6772994944)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Waffensachkunde Komplett | $3.99 | one-time |


### Read4G

[App page](https://appshunter.io/ios/app/read4g-learn-german/id6774181479)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Annual | $69.99 | per year |


## Frequently asked questions

### Is Firearms Knowledge Compact free?

Firearms Knowledge Compact is free to download, with in-app purchases available.

### Is Read4G free?

Read4G is free to download, with in-app purchases available.

### Do Firearms Knowledge Compact or Read4G have ads?

Neither Firearms Knowledge Compact nor Read4G shows ads.

### Which is updated more often, Firearms Knowledge Compact or Read4G?

Firearms Knowledge Compact ships an update every 5 days, and Read4G every 2 weeks. Most recently, Firearms Knowledge Compact was updated on October 15, 2026 and Read4G 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.*