# DDAYO vs 문어 CBT

The clearest difference is in-app purchases: DDAYO at none against 문어 CBT's 4. DDAYO also leads on update cadence (daily vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 문어 CBT sells 4 one-off in-app purchases. DDAYO asks for nothing beyond the download.

DDAYO ships an update daily, 문어 CBT weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | DDAYO | 문어 CBT |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 46 MB | 10 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [JinGyun Jeong](https://appshunter.io/developer/1535411435) | [mooneolab](https://appshunter.io/developer/1896763449) |

## What reviewers say

### DDAYO

[App page](https://appshunter.io/ios/app/ddayo/id6743990712)

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

**In-app purchases:** none


### 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 DDAYO free?

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

### Is 문어 CBT free?

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

### Do DDAYO or 문어 CBT have ads?

Neither DDAYO nor 문어 CBT shows ads.

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

DDAYO ships an update daily, and 문어 CBT weekly. Most recently, DDAYO was updated on October 30, 2026 and 문어 CBT on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*