# 스마트 공지시스템 e알리미 vs 클래스연구소

The clearest difference is ads: 스마트 공지시스템 e알리미 at none against 클래스연구소's shown. 스마트 공지시스템 e알리미 also leads on monetization model (free vs ad-supported). 클래스연구소's advantage is update cadence (daily vs every 4 months). On price, review sentiment, 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.

스마트 공지시스템 e알리미 ships an update every 4 months, 클래스연구소 daily. The most recent releases landed on October 26, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 스마트 공지시스템 e알리미 | 클래스연구소 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (16 ratings)](https://appshunter.io/ios/app/e/id899929551/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | **12.1% of reviews** | 11.1% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Daily** |
| Monetization | **Free** | Ad-supported |
| Size | 18 MB | 15 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [(c) E-WUT](https://appshunter.io/developer/487448818) | [Jung Nam Choi](https://appshunter.io/developer/1659803857) |

## What reviewers say

### 스마트 공지시스템 e알리미

[App page](https://appshunter.io/ios/app/e/id899929551)

This app provides a smart notification system for schools, apartments, government offices, and businesses. It allows users to experience new and more convenient announcements. Users can apply for service through the provided website.

**Highlights:** Smart notification system, Photo upload capability, Push notifications for announcements, Service application via website, Supports various organizations

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

**In-app purchases:** none


### 클래스연구소

[App page](https://appshunter.io/ios/app/id1659803855)

Manage student attendance, payments, and receive important announcements from educational institutions. Stay updated on school news and individual notices for a streamlined communication experience.

**Highlights:** Attendance tracking, Payment information, Notices and announcements, Real-time notifications, Individual and group messages

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

**In-app purchases:** none


## Frequently asked questions

### Is 스마트 공지시스템 e알리미 free?

스마트 공지시스템 e알리미 is free to download, with no in-app purchases.

### Is 클래스연구소 free?

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

### Do 스마트 공지시스템 e알리미 or 클래스연구소 have ads?

클래스연구소 shows ads; 스마트 공지시스템 e알리미 does not.

### Which is updated more often, 스마트 공지시스템 e알리미 or 클래스연구소?

스마트 공지시스템 e알리미 ships an update every 4 months, and 클래스연구소 daily. Most recently, 스마트 공지시스템 e알리미 was updated on October 26, 2026 and 클래스연구소 on October 10, 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.*