# 백신화학 vs 챌린저스

The clearest difference is update cadence: 챌린저스 at every 2 days against 백신화학's weekly. 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.

백신화학 ships an update weekly, 챌린저스 every 2 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | 백신화학 | 챌린저스 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6791399202/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | — | Free |
| Size | 34 MB | 166 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [EduU Learning, Inc.](https://appshunter.io/developer/1862370815) | [AtlasEdu](https://appshunter.io/developer/6825153850) |

## What reviewers say

### 백신화학

[App page](https://appshunter.io/ios/app/id6786100210)

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

**In-app purchases:** none


### 챌린저스

[App page](https://appshunter.io/ios/app/id6791399202)

This app helps students manage their entire learning process, from assignments and tests to reviewing mistakes. It offers features like deadline reminders, digital note-taking, and automatic error tracking for focused study.

**Highlights:** Assignment management with deadline reminders, Digital note-taking and auto-save for problem-solving, In-app tests and quizzes with instant results, Automatic incorrect answer notebook for targeted review, Learning reports to track progress and identify strengths, Push notifications for important updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 백신화학 free?

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

### Is 챌린저스 free?

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

### Do 백신화학 or 챌린저스 have ads?

Neither 백신화학 nor 챌린저스 shows ads.

### Which is updated more often, 백신화학 or 챌린저스?

백신화학 ships an update weekly, and 챌린저스 every 2 days. Most recently, 백신화학 was updated on November 10, 2026 and 챌린저스 on November 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.*