# SoroTouch Mental Calculation vs 玉井式 KIWAMI AAA+ 生徒用

The clearest difference is monetization model: 玉井式 KIWAMI AAA+ 生徒用 at free against SoroTouch Mental Calculation's subscription. SoroTouch Mental Calculation's advantage is update cadence (every 2 months vs every 6 months) and review sentiment (32% vs 20%). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SoroTouch Mental Calculation ships an update every 2 months, 玉井式 KIWAMI AAA+ 生徒用 every 6 months. The most recent releases landed on October 24, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | SoroTouch Mental Calculation | 玉井式 KIWAMI AAA+ 生徒用 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (39 ratings)](https://appshunter.io/ios/app/sorotouch-mental-calculation/id1153930190/reviews)** | — |
| Number of ratings | **39** | — |
| Positive reviews | **32.1% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Subscription | **Free** |
| Size | 460 MB | 17 MB |
| Requires iOS | **13.0** | 13.2 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [SoroTouch Co., Ltd.](https://appshunter.io/developer/927820962) | [TAMAI INVESTMENT EDUCATIONS INC.](https://appshunter.io/developer/1409073610) |

## 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


### 玉井式 KIWAMI AAA+ 生徒用

[App page](https://appshunter.io/ios/app/kiwami-aaa-plus/id1540914249)

This iPad app facilitates efficient learning of geometry and algebra through personalized accounts. Users can study math anytime with their unique login credentials. Access requires a separate ID and password provided by an affiliated cram school.

**Highlights:** Geometry learning, Algebra learning, Personalized accounts, Anytime math study, iPad compatible

**In-app purchases:** none


## Frequently asked questions

### Is SoroTouch Mental Calculation free?

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

### Is 玉井式 KIWAMI AAA+ 生徒用 free?

玉井式 KIWAMI AAA+ 生徒用 is free to download, with no in-app purchases.

### Do SoroTouch Mental Calculation or 玉井式 KIWAMI AAA+ 生徒用 have ads?

Neither SoroTouch Mental Calculation nor 玉井式 KIWAMI AAA+ 生徒用 shows ads.

### Which is updated more often, SoroTouch Mental Calculation or 玉井式 KIWAMI AAA+ 生徒用?

SoroTouch Mental Calculation ships an update every 2 months, and 玉井式 KIWAMI AAA+ 生徒用 every 6 months. Most recently, SoroTouch Mental Calculation was updated on October 24, 2026 and 玉井式 KIWAMI AAA+ 生徒用 on September 8, 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.*