# UniPlanet(유니플래닛) vs 똑서

The clearest difference is in-app purchases: UniPlanet(유니플래닛) at none against 똑서's 11. UniPlanet(유니플래닛) also leads on iOS requirement (12.0 vs 16.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 똑서 sells 11 in-app purchases, starting at $5.99 per month. UniPlanet(유니플래닛) asks for nothing beyond the download.

UniPlanet(유니플래닛) ships an update monthly, 똑서 every 3 weeks. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | UniPlanet(유니플래닛) | 똑서 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.3 (3 ratings)](https://appshunter.io/ios/app/id6738773290/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 84.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 376 MB | 104 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Wonsuk Yoon](https://appshunter.io/developer/1555662039) | [주식회사 노틸러스](https://appshunter.io/developer/1723483238) |

## What reviewers say

### UniPlanet(유니플래닛)

[App page](https://appshunter.io/ios/app/uniplanet/id1615525009)

**Features:** macOS Compatibility

**In-app purchases:** none


### 똑서

[App page](https://appshunter.io/ios/app/id6738773290)

This app aims to make reading enjoyable for children, fostering a smart reading habit. It offers a dedicated space for children's reading education, helping them develop a love for books from an early age.

**Highlights:** Develops smart reading habits, Makes reading enjoyable, Focuses on children's reading education, Starts reading journey from early age

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 월간 멤버십 (1인/혜택) | $5.99 | per month |
| 월간 멤버십 (1인) | $5.99 | per month |
| 월간 멤버십 (1인) | $6.99 | per month |
| 월간 멤버십 (1인) | $6.99 | per month |
| 월간 멤버십 (2인/혜택) | $9.99 | per month |
| 월간 멤버십 (2인) | $9.99 | per month |
| 월간 멤버십 (2인) | $11.99 | per month |
| 월간 멤버십 (3인) | $11.99 | per month |
| 월간 멤버십 (2인) | $11.99 | per month |
| 월간 멤버십 (3인) | $12.99 | per month |
| 월간 멤버십 (3인) | $14.99 | per month |


## Frequently asked questions

### Is UniPlanet(유니플래닛) free?

UniPlanet(유니플래닛) is free to download, with no in-app purchases.

### Is 똑서 free?

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

### Do UniPlanet(유니플래닛) or 똑서 have ads?

Neither UniPlanet(유니플래닛) nor 똑서 shows ads.

### Which is updated more often, UniPlanet(유니플래닛) or 똑서?

UniPlanet(유니플래닛) ships an update monthly, and 똑서 every 3 weeks. Most recently, UniPlanet(유니플래닛) was updated on October 25, 2026 and 똑서 on October 28, 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.*