# Think Why vs 英英単語帳 | 英語で覚える英単語クイズ

The clearest difference is iOS requirement: 英英単語帳 | 英語で覚える英単語クイズ at 15.6 against Think Why's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Think Why sells 1 one-off in-app purchase and 英英単語帳 | 英語で覚える英単語クイズ sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Think Why | 英英単語帳 | 英語で覚える英単語クイズ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/think-why/id6799816213/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | — |
| Size | 62 MB | 246 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [放 徐](https://appshunter.io/developer/6793334686) | [Katsuyuki Hayashi](https://appshunter.io/developer/1597263179) |

## What reviewers say

### Think Why

[App page](https://appshunter.io/ios/app/think-why/id6799816213)

This app teaches elementary students how to understand math word problems by breaking down the reasoning process into manageable steps. It focuses on conceptual understanding rather than just keyword matching. Users can access free content or unlock the full learning path with a one-time purchase.

**Highlights:** Step-by-step reasoning for word problems, Interactive models for visualization, Explanation of intermediate numbers, Answer checking against the story, Transferring reasoning to new contexts, Full learning path unlock

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Learning Path | $19.99 | one-time |


### 英英単語帳 | 英語で覚える英単語クイズ

[App page](https://appshunter.io/ios/app/id6809687756)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Annual | $34.99 | per year |
| Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Think Why free?

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

### Is 英英単語帳 | 英語で覚える英単語クイズ free?

英英単語帳 | 英語で覚える英単語クイズ is free to download, with in-app purchases available.

### Do Think Why or 英英単語帳 | 英語で覚える英単語クイズ have ads?

Neither Think Why nor 英英単語帳 | 英語で覚える英単語クイズ shows ads.

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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.*