# 妖怪・心霊・怪談【怖いお話アニメ】 vs Math Bird Challenge

The clearest difference is in-app purchases: Math Bird Challenge at none against 妖怪・心霊・怪談【怖いお話アニメ】's 1. 妖怪・心霊・怪談【怖いお話アニメ】's advantage is ads (none vs shown) and iOS requirement (8.0 vs 13.0). On price and device support there is nothing between them.

Both are free to download. 妖怪・心霊・怪談【怖いお話アニメ】 sells 1 one-off in-app purchase. Math Bird Challenge asks for nothing beyond the download.

## The numbers

| Metric | 妖怪・心霊・怪談【怖いお話アニメ】 | Math Bird Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 36 months | — |
| Monetization | — | Ad-supported |
| Size | 37 MB | 36 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [yumearu Co.,Ltd.](https://appshunter.io/developer/411112570) | [Tomohiro Kosaka](https://appshunter.io/developer/1095373790) |

## What reviewers say

### 妖怪・心霊・怪談【怖いお話アニメ】

[App page](https://appshunter.io/ios/app/id1050910775)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $1.99 | one-time |


### Math Bird Challenge

[App page](https://appshunter.io/ios/app/math-bird-challenge/id6756185149)

This app makes learning arithmetic engaging by combining classic arcade gameplay with math challenges. Players tap to navigate obstacles while solving addition and subtraction problems, with difficulty increasing as their score rises. It's designed for children aged 5-12 to build math skills through fun, reward-based play.

**Highlights:** Arithmetic practice integrated with gameplay, Progressive difficulty levels, Strengthens mental arithmetic, Improves calculation speed, Works offline, Simple one-tap controls

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

**In-app purchases:** none


## Frequently asked questions

### Is 妖怪・心霊・怪談【怖いお話アニメ】 free?

妖怪・心霊・怪談【怖いお話アニメ】 is free to download, with in-app purchases available.

### Is Math Bird Challenge free?

Math Bird Challenge is free to download, with no in-app purchases.

### Do 妖怪・心霊・怪談【怖いお話アニメ】 or Math Bird Challenge have ads?

Math Bird Challenge shows ads; 妖怪・心霊・怪談【怖いお話アニメ】 does not.

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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.*