# 랠리즈(Rallyz) vs 스마트 어항 IoT

The clearest difference is ads: 스마트 어항 IoT at none against 랠리즈(Rallyz)'s shown. 스마트 어항 IoT also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, 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.

랠리즈(Rallyz) ships an update every 5 weeks, 스마트 어항 IoT every 3 weeks. Both last shipped on November 12, 2026.

## The numbers

| Metric | 랠리즈(Rallyz) | 스마트 어항 IoT |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 32.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 39 MB | 23 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Woongjin Compass, Co., Ltd.](https://appshunter.io/developer/393294989) | [KETRI](https://appshunter.io/developer/1794271231) |

## What reviewers say

### 랠리즈(Rallyz)

[App page](https://appshunter.io/ios/app/rallyz/id1605911146)

Manage all aspects of academy life, from announcements and attendance to grades and payments. Communicate with your class, track individual learning progress, and even participate in live video lessons. Experience a streamlined academy experience with this comprehensive platform.

**Highlights:** Real-time academy announcements, Attendance and grade tracking, Class-specific communication, Easy academy fee payments, Live video lessons, Personalized learning progress reports

**In-app purchases:** none


### 스마트 어항 IoT

[App page](https://appshunter.io/ios/app/iot/id6711335941)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 랠리즈(Rallyz) free?

랠리즈(Rallyz) is free to download, with no in-app purchases.

### Is 스마트 어항 IoT free?

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

### Do 랠리즈(Rallyz) or 스마트 어항 IoT have ads?

랠리즈(Rallyz) shows ads; 스마트 어항 IoT does not.

### Which is updated more often, 랠리즈(Rallyz) or 스마트 어항 IoT?

랠리즈(Rallyz) ships an update every 5 weeks, and 스마트 어항 IoT every 3 weeks. Most recently, 랠리즈(Rallyz) was updated on November 12, 2026 and 스마트 어항 IoT on November 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.*