# EU vs CA4K

The clearest difference is iOS requirement: CA4K at 11.0 against EU's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EU ships an update every 42 months, CA4K every 54 months. The most recent releases landed on October 26, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | EU | CA4K |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.1 (11 ratings)](https://appshunter.io/ios/app/ca4k/id1491432558/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 42 months** | Every 54 months |
| Monetization | — | Free |
| Size | 7 MB | 0 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [R.L Machinery Industry Corp.](https://appshunter.io/developer/454403607) | [NAPCO Security Technologies](https://appshunter.io/developer/397342490) |

## What reviewers say

### EU

[App page](https://appshunter.io/ios/app/eu-one/id1131130902)

**In-app purchases:** none


### CA4K

[App page](https://appshunter.io/ios/app/ca4k/id1491432558)

This app provides mobile access control for enterprise entry points like doors and elevators. Users can customize their approved access points and gain entry without physical credentials. It also offers optional administrator functions for system management.

**Highlights:** Mobile access to doors and elevators, Customize approved entry points, Log access without physical credentials, Administrator functions for system management, Enterprise electronic access control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EU free?

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

### Is CA4K free?

CA4K is free to download, with no in-app purchases.

### Do EU or CA4K have ads?

Neither EU nor CA4K shows ads.

### Which is updated more often, EU or CA4K?

EU ships an update every 42 months, and CA4K every 54 months. Most recently, EU was updated on October 26, 2026 and CA4K on October 22, 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.*