# 에스원 PS 메신저 vs Unicorn IoT

The clearest difference is review sentiment: Unicorn IoT at 50% against 에스원 PS 메신저's 25%. 에스원 PS 메신저's advantage is update cadence (every 3 months vs every 7 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

에스원 PS 메신저 ships an update every 3 months, Unicorn IoT every 7 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 에스원 PS 메신저 | Unicorn IoT |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 7 months |
| Monetization | Free | Free |
| Size | 21 MB | 200 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Jiransoft](https://appshunter.io/developer/326119493) | [seojin networks](https://appshunter.io/developer/1554994980) |

## What reviewers say

### 에스원 PS 메신저

[App page](https://appshunter.io/ios/app/ps/id994028235)

This app facilitates secure and convenient internal communication and document sharing for businesses. It offers two message types, read receipts, message recall, and a secure file-sharing environment linked to its parent service.

**Highlights:** Two message types (mail & chat), Read receipts and message recall, Secure internal file sharing, Convenient communication for work, Safe document transfer and utilization

**Features:** macOS Compatibility

**In-app purchases:** none


### Unicorn IoT

[App page](https://appshunter.io/ios/app/unicorn-iot/id1579512368)

Effortlessly manage your smart home devices from anywhere. This app enables remote control, enhanced safety, and power saving with flexible timer settings. Share access with your family for a connected smart living experience.

**Highlights:** Remote device control, Enhanced safety features, Power saving options, Flexible timer settings, Multi-device support, Family sharing

**In-app purchases:** none


## Frequently asked questions

### Is 에스원 PS 메신저 free?

에스원 PS 메신저 is free to download, with no in-app purchases.

### Is Unicorn IoT free?

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

### Do 에스원 PS 메신저 or Unicorn IoT have ads?

Neither 에스원 PS 메신저 nor Unicorn IoT shows ads.

### Which is updated more often, 에스원 PS 메신저 or Unicorn IoT?

에스원 PS 메신저 ships an update every 3 months, and Unicorn IoT every 7 months. Most recently, 에스원 PS 메신저 was updated on October 20, 2026 and Unicorn IoT on October 24, 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.*