# ことわざ 勉強 vs Think Why

The clearest difference is in-app purchases: ことわざ 勉強 at none against Think Why's 1. ことわざ 勉強 also leads on iOS requirement (13.0 vs 17.0). Think Why's advantage is ads (none vs shown) and update cadence (fortnightly vs every 4 months). On price and device support there is nothing between them.

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

ことわざ 勉強 ships an update every 4 months, Think Why fortnightly. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | ことわざ 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 | Yes | **No** |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 154 MB | 62 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ohmori Takeru](https://appshunter.io/developer/969791681) | [放 徐](https://appshunter.io/developer/6793334686) |

## What reviewers say

### ことわざ 勉強

[App page](https://appshunter.io/ios/app/id6476653338)

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

**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 ことわざ 勉強 free?

ことわざ 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 ことわざ 勉強 or Think Why have ads?

ことわざ 勉強 shows ads; Think Why does not.

### Which is updated more often, ことわざ 勉強 or Think Why?

ことわざ 勉強 ships an update every 4 months, and Think Why fortnightly. Most recently, ことわざ 勉強 was updated on October 8, 2026 and Think Why on October 4, 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.*