# 算数勉強 vs Think Why

The clearest difference is in-app purchases: 算数勉強 at none against Think Why's 1. 算数勉強 also leads on iOS requirement (9.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Think Why sells 1 one-off in-app purchase. 算数勉強 asks for nothing beyond the download.

## The numbers

| Metric | 算数勉強 | Think Why |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/think-why/id6799816213/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 62 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Junpei Shimotsu](https://appshunter.io/developer/882299124) | [放 徐](https://appshunter.io/developer/6793334686) |

## What reviewers say

### 算数勉強

[App page](https://appshunter.io/ios/app/id1489846785)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 算数勉強 free?

算数勉強 is free to download, with no in-app purchases.

### Is Think Why free?

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

### Do 算数勉強 or Think Why have ads?

Neither 算数勉強 nor Think Why 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.*