# 코딩챌린지 vs 문어 CBT

The clearest difference is iOS requirement: 코딩챌린지 at 11.0 against 문어 CBT's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 코딩챌린지 sells 3 in-app purchases, starting at $1.99 per month and 문어 CBT sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

코딩챌린지 ships an update every 6 days, 문어 CBT weekly. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 코딩챌린지 | 문어 CBT |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 52 MB | 10 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YOUNGKYUN KANG](https://appshunter.io/developer/1362410195) | [mooneolab](https://appshunter.io/developer/1896763449) |

## What reviewers say

### 코딩챌린지

[App page](https://appshunter.io/ios/app/id1625309702)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1개월 광고제거 | $1.99 | per month |
| 3개월 광고제거 | $2.99 | per 3 months |
| 1년 광고제거 | $7.99 | per year |


### 문어 CBT

[App page](https://appshunter.io/ios/app/cbt/id6770780669)

This app provides practice questions and mock exams for IT certification candidates. It offers a comprehensive learning path from problem-solving to reviewing incorrect answers and tracking progress, all in one place. It supports various IT certifications like SQLD, ADsP, and Information Processing.

**Highlights:** Practice past exam questions, Simulate real CBT exams, Quick OX quizzes for concept review, Automatic incorrect answer notebook, Learning dashboard with progress tracking, Supports SQLD, ADsP, Information Processing

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Focus | $3.99 | one-time |
| Thunder | $4.99 | one-time |
| Pro | $9.99 | one-time |
| Master | $19.99 | one-time |


## Frequently asked questions

### Is 코딩챌린지 free?

코딩챌린지 is free to download, with in-app purchases available.

### Is 문어 CBT free?

문어 CBT is free to download, with in-app purchases available.

### Do 코딩챌린지 or 문어 CBT have ads?

Neither 코딩챌린지 nor 문어 CBT shows ads.

### Which is updated more often, 코딩챌린지 or 문어 CBT?

코딩챌린지 ships an update every 6 days, and 문어 CBT weekly. Most recently, 코딩챌린지 was updated on October 27, 2026 and 문어 CBT on October 29, 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.*