# SoroTouch Mental Calculation vs 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級）

The clearest difference is rating: 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） at 4.4 against SoroTouch Mental Calculation's 2.3. 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） also leads on review sentiment (57% vs 32%) and update cadence (every 2 weeks vs every 2 months). SoroTouch Mental Calculation's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, ratings volume and device support there is nothing between them.

Both are free to download. 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） sells 2 in-app purchases, starting at $0.99 per month. SoroTouch Mental Calculation asks for nothing beyond the download.

小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） holds the better App Store score, 4.4 against 2.3. Both are backed by a comparable volume of ratings — 39 and 15 respectively. Written reviews point the same way: 32% of SoroTouch Mental Calculation's written reviews are positive against 57% of 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級）'s.

SoroTouch Mental Calculation ships an update every 2 months, 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | SoroTouch Mental Calculation | 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (39 ratings)](https://appshunter.io/ios/app/sorotouch-mental-calculation/id1153930190/reviews) | **[4.4 (15 ratings)](https://appshunter.io/ios/app/2-9/id1462697118/reviews)** |
| Number of ratings | **39** | 15 |
| Positive reviews | 32.1% of reviews | **57.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 460 MB | 92 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [SoroTouch Co., Ltd.](https://appshunter.io/developer/927820962) | [Junpei Shimotsu](https://appshunter.io/developer/882299124) |

## What reviewers say

### SoroTouch Mental Calculation

[App page](https://appshunter.io/ios/app/sorotouch-mental-calculation/id1153930190)

This app teaches abacus method mental calculation using patented imaging technology. Designed for children aged 5-8, it offers games and rankings to enhance math skills through daily practice. It requires membership registration via a web portal.

**Highlights:** Abacus method mental calculation, Imaging skills training, Daily missions and games, Progress tracking and rankings, Visible and Invisible modes, Audio and rhythm-based learning

**In-app purchases:** none


### 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級）

[App page](https://appshunter.io/ios/app/2-9/id1462697118)

This app helps second graders master 160 kanji characters through engaging games and interactive exercises. It focuses on reading, writing, and handwriting practice, with automatic review of mistakes. Designed for fun and effective learning, it also prepares users for the Kanji Kentei Grade 9 exam.

**Highlights:** Master 160 second-grade kanji, Reading and writing quizzes, Handwriting recognition practice, Automatic review of errors, Character growth through learning, Mini-games for engagement

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告削除 | $0.99 | per month |
| 永久広告削除+全機能開放 | $1.99 | one-time |


## Frequently asked questions

### Is SoroTouch Mental Calculation free?

SoroTouch Mental Calculation is free to download, with no in-app purchases.

### Is 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） free?

小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） is free to download, with in-app purchases available.

### Which has better reviews, SoroTouch Mental Calculation or 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級）?

小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） is rated higher. SoroTouch Mental Calculation averages 2.3 out of 5 from 39 ratings, while 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） averages 4.4 from 15 ratings.

### Do SoroTouch Mental Calculation or 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） have ads?

小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） shows ads; SoroTouch Mental Calculation does not.

### Which is updated more often, SoroTouch Mental Calculation or 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級）?

SoroTouch Mental Calculation ships an update every 2 months, and 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） every 2 weeks. Most recently, SoroTouch Mental Calculation was updated on October 24, 2026 and 小学2年生 漢字ドリル｜書き取り・手書き対応（漢検9級） on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*