# 즐거운 유아과학 예스사이언스 step3 vs Fast100Math

The clearest difference is update cadence: Fast100Math at every 3 days against 즐거운 유아과학 예스사이언스 step3's monthly. 즐거운 유아과학 예스사이언스 step3's advantage is iOS requirement (9.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

즐거운 유아과학 예스사이언스 step3 ships an update monthly, Fast100Math every 3 days. The most recent releases landed on October 9, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | 즐거운 유아과학 예스사이언스 step3 | Fast100Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Size | 257 MB | 31 MB |
| Requires iOS | **9.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chunjae Education.Inc.](https://appshunter.io/developer/428912179) | [makoto amijima](https://appshunter.io/developer/1493994946) |

## What reviewers say

### 즐거운 유아과학 예스사이언스 step3

[App page](https://appshunter.io/ios/app/step3/id1218188427)

**In-app purchases:** none


### Fast100Math

[App page](https://appshunter.io/ios/app/fast100math/id6739807220)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 즐거운 유아과학 예스사이언스 step3 free?

즐거운 유아과학 예스사이언스 step3 is free to download, with no in-app purchases.

### Is Fast100Math free?

Fast100Math is free to download, with no in-app purchases.

### Do 즐거운 유아과학 예스사이언스 step3 or Fast100Math have ads?

Neither 즐거운 유아과학 예스사이언스 step3 nor Fast100Math shows ads.

### Which is updated more often, 즐거운 유아과학 예스사이언스 step3 or Fast100Math?

즐거운 유아과학 예스사이언스 step3 ships an update monthly, and Fast100Math every 3 days. Most recently, 즐거운 유아과학 예스사이언스 step3 was updated on October 9, 2026 and Fast100Math on September 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.*