# Specialized EMP vs Relay Offline Client

The clearest difference is update cadence: Relay Offline Client at every 3 weeks against Specialized EMP's every 3 months. Specialized EMP's advantage is iOS requirement (13.4 vs 18.0). 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.

Specialized EMP ships an update every 3 months, Relay Offline Client every 3 weeks. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Specialized EMP | Relay Offline Client |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 94 MB | 23 MB |
| Requires iOS | **13.4** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [PUBLIC TELECOMMUNICATIONS COMPANY 'STCSC SPECIALIZED'](https://appshunter.io/developer/1396379044) | [KeyMark Inc.](https://appshunter.io/developer/627543031) |

## What reviewers say

### Specialized EMP

[App page](https://appshunter.io/ios/app/specialized-emp/id6465895607)

**Features:** macOS Compatibility

**In-app purchases:** none


### Relay Offline Client

[App page](https://appshunter.io/ios/app/relay-offline-client/id6753014685)

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

**In-app purchases:** none


## Frequently asked questions

### Is Specialized EMP free?

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

### Is Relay Offline Client free?

Relay Offline Client is free to download, with no in-app purchases.

### Do Specialized EMP or Relay Offline Client have ads?

Neither Specialized EMP nor Relay Offline Client shows ads.

### Which is updated more often, Specialized EMP or Relay Offline Client?

Specialized EMP ships an update every 3 months, and Relay Offline Client every 3 weeks. Most recently, Specialized EMP was updated on October 5, 2026 and Relay Offline Client on October 12, 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.*