# 두칭 vs 상식 한 줄

The clearest difference is review sentiment: 두칭 at 100% against 상식 한 줄's 80%. 두칭 also leads on iOS requirement (14.0 vs 16.4). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 두칭 sells 4 in-app purchases, starting at $5.99 per month and 상식 한 줄 sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

두칭 ships an update every 11 days, 상식 한 줄 every 2 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | 두칭 | 상식 한 줄 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6451434808/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | Freemium |
| Size | 5 MB | 57 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Active Senior Lab Co., Ltd.](https://appshunter.io/developer/1706787104) | [Sunghee Lee](https://appshunter.io/developer/1477689060) |

## What reviewers say

### 두칭

[App page](https://appshunter.io/ios/app/id6444273112)

Engage in fun brain games designed to enhance cognitive abilities and maintain brain health. This training program, based on research from the World Brain Society and official dementia screening tools, offers diverse quizzes and games across seven cognitive areas.

**Highlights:** Cognitive ability enhancement, Brain health management, Diverse quiz and game formats, Based on scientific research, Covers 7 cognitive areas, Improves memory and concentration

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 정기구독 훈련 | $5.99 | per month |
| 30일 훈련 | $5.99 | one-time |
| 90일 훈련 | $12.99 | one-time |
| 365일 훈련 | $39.99 | one-time |


### 상식 한 줄

[App page](https://appshunter.io/ios/app/id6451434808)

Access a daily line of general knowledge on your home screen without dedicated study time. Explore over 3,000 facts across 60 topics, test your knowledge with quizzes, and track your learning progress through levels and streaks. Save and search for facts to build a consistent learning habit.

**Highlights:** Daily knowledge facts via widgets, Over 3,000 facts across 60 topics, 4-choice quizzes for review, Leveling and streak tracking, Save and search for facts, Home and lock screen widgets

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1개월 Premium | $1.99 | per month |
| 1년 Premium | $14.99 | per year |


## Frequently asked questions

### Is 두칭 free?

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

### Is 상식 한 줄 free?

상식 한 줄 is free to download, with in-app purchases available.

### Do 두칭 or 상식 한 줄 have ads?

Neither 두칭 nor 상식 한 줄 shows ads.

### Which is updated more often, 두칭 or 상식 한 줄?

두칭 ships an update every 11 days, and 상식 한 줄 every 2 weeks. Most recently, 두칭 was updated on November 3, 2026 and 상식 한 줄 on November 3, 2026.

---

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