# 랠리즈(Rallyz) vs 캐츠업 모바일 OMR

The clearest difference is update cadence: 랠리즈(Rallyz) at every 5 weeks against 캐츠업 모바일 OMR's every 3 months. 랠리즈(Rallyz) also leads on iOS requirement (12.0 vs 14.0). On price, review sentiment, ads and in-app purchases 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, 캐츠업 모바일 OMR every 3 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 랠리즈(Rallyz) | 캐츠업 모바일 OMR |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 52 MB | 7 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Woongjin Compass, Co., Ltd.](https://appshunter.io/developer/393294989) | [(주)단비교육 (Danbi Education Co. ,Ltd.)](https://appshunter.io/developer/1294082775) |

## What reviewers say

### 랠리즈(Rallyz)

[App page](https://appshunter.io/ios/app/rallyz/id6443887361)

This app simplifies attendance tracking for educational institutions. It allows for quick, one-second check-ins using the last four digits of a phone number and automatically notifies parents. Enjoy a seamless and intuitive experience designed to enhance daily operations.

**Highlights:** 1-second attendance check-in, Parent notifications, Intuitive UI, Free to use, App-based platform

**In-app purchases:** none


### 캐츠업 모바일 OMR

[App page](https://appshunter.io/ios/app/omr/id6476922565)

This app simplifies homework and assignments given by your academy teachers. Automatically grade quizzes, receive personalized feedback on incorrect answers, and track your progress to improve your skills and grades.

**Highlights:** Automated grading, Personalized feedback, Assignment submission, Progress tracking, Skill improvement

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

**In-app purchases:** none


## Frequently asked questions

### Is 랠리즈(Rallyz) free?

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

### Is 캐츠업 모바일 OMR free?

캐츠업 모바일 OMR is free to download, with no in-app purchases.

### Do 랠리즈(Rallyz) or 캐츠업 모바일 OMR have ads?

Neither 랠리즈(Rallyz) nor 캐츠업 모바일 OMR shows ads.

### Which is updated more often, 랠리즈(Rallyz) or 캐츠업 모바일 OMR?

랠리즈(Rallyz) ships an update every 5 weeks, and 캐츠업 모바일 OMR every 3 months. Most recently, 랠리즈(Rallyz) was updated on October 24, 2026 and 캐츠업 모바일 OMR on October 9, 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.*