# Why? 과학 vs DailyBits

The clearest difference is in-app purchases: DailyBits at none against Why? 과학's 11. DailyBits also leads on update cadence (every 11 days vs monthly) and device support (3 vs 1). Why? 과학's advantage is iOS requirement (6.0 vs 13.0). On price and ads there is nothing between them.

Both are free to download. Why? 과학 sells 11 one-off in-app purchases. DailyBits asks for nothing beyond the download.

Why? 과학 ships an update monthly, DailyBits every 11 days. The most recent releases landed on September 27, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Why? 과학 | DailyBits |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/why/id433116895/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | Free | — |
| Size | 15 MB | 23 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [(주)예림당](https://appshunter.io/developer/565049166) | [soohun park](https://appshunter.io/developer/1874560976) |

## What reviewers say

### Why? 과학

[App page](https://appshunter.io/ios/app/why/id433116895)

This app makes complex science topics easy and fun for children through engaging comics and vivid illustrations. It aligns with elementary school science curricula, making it a great study aid. Continuous content updates ensure an ever-growing library of scientific exploration.

**Highlights:** Engaging comic format, Vivid illustrations and real photos, Curriculum-aligned content, Expert-reviewed science information, Continuous content updates, International export success

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Why 우주 | $5.99 | one-time |
| Why 인체 | $5.99 | one-time |
| Why 바다 | $5.99 | one-time |
| Why 곤충 | $5.99 | one-time |
| Why 사춘기와 성 | $5.99 | one-time |
| Why 공룡 | $5.99 | one-time |
| Why 똥 | $5.99 | one-time |
| Why 외계인과 UFO | $5.99 | one-time |
| Why 독있는 동식물 | $5.99 | one-time |
| Why 응급처치 | $5.99 | one-time |
| Why 전기전자 | $5.99 | one-time |


### DailyBits

[App page](https://appshunter.io/ios/app/dailybits/id6758715213)

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

**In-app purchases:** none


## Frequently asked questions

### Is Why? 과학 free?

Why? 과학 is free to download, with in-app purchases available.

### Is DailyBits free?

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

### Do Why? 과학 or DailyBits have ads?

Neither Why? 과학 nor DailyBits shows ads.

### Which is updated more often, Why? 과학 or DailyBits?

Why? 과학 ships an update monthly, and DailyBits every 11 days. Most recently, Why? 과학 was updated on September 27, 2026 and DailyBits on October 3, 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.*