# Think Why vs Kazuasobi Math Drill

The clearest difference is in-app purchases: Kazuasobi Math Drill at none against Think Why's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Think Why sells 1 one-off in-app purchase. Kazuasobi Math Drill asks for nothing beyond the download.

Think Why ships an update fortnightly, Kazuasobi Math Drill every 10 days. The most recent releases landed on October 27, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Think Why | Kazuasobi Math Drill |
| --- | --- | --- |
| 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 | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 62 MB | 16 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [放 徐](https://appshunter.io/developer/6793334686) | [nakagawa kenta](https://appshunter.io/developer/6785565981) |

## 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 |


### Kazuasobi Math Drill

[App page](https://appshunter.io/ios/app/kazuasobi-math-drill/id6807497032)

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

**In-app purchases:** none


## Frequently asked questions

### Is Think Why free?

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

### Is Kazuasobi Math Drill free?

Kazuasobi Math Drill is free to download, with no in-app purchases.

### Do Think Why or Kazuasobi Math Drill have ads?

Neither Think Why nor Kazuasobi Math Drill shows ads.

### Which is updated more often, Think Why or Kazuasobi Math Drill?

Think Why ships an update fortnightly, and Kazuasobi Math Drill every 10 days. Most recently, Think Why was updated on October 27, 2026 and Kazuasobi Math Drill on October 26, 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.*