# EMS PRO ONE vs Empire Visitor System

The clearest difference is update cadence: Empire Visitor System at every 2 weeks against EMS PRO ONE's every 3 months. EMS PRO ONE's advantage is iOS requirement (12 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

EMS PRO ONE ships an update every 3 months, Empire Visitor System every 2 weeks. The most recent releases landed on October 4, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | EMS PRO ONE | Empire Visitor System |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 24 MB | 44 MB |
| Requires iOS | **12** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Markus Trocha](https://appshunter.io/developer/1770456913) | [Nascent Innovations](https://appshunter.io/developer/1761338758) |

## What reviewers say

### EMS PRO ONE

[App page](https://appshunter.io/ios/app/ems-pro-one/id6717588985)

**In-app purchases:** none


### Empire Visitor System

[App page](https://appshunter.io/ios/app/empire-visitor-system/id6736564808)

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

**In-app purchases:** none


## Frequently asked questions

### Is EMS PRO ONE free?

EMS PRO ONE is free to download, with no in-app purchases.

### Is Empire Visitor System free?

Empire Visitor System is free to download, with no in-app purchases.

### Do EMS PRO ONE or Empire Visitor System have ads?

Neither EMS PRO ONE nor Empire Visitor System shows ads.

### Which is updated more often, EMS PRO ONE or Empire Visitor System?

EMS PRO ONE ships an update every 3 months, and Empire Visitor System every 2 weeks. Most recently, EMS PRO ONE was updated on October 4, 2026 and Empire Visitor System on October 23, 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.*