# そろばん電卓 〜計算を楽しもう〜 vs Abacus Practice

The clearest difference is review sentiment: Abacus Practice at 100% against そろばん電卓 〜計算を楽しもう〜's 0%. そろばん電卓 〜計算を楽しもう〜's advantage is price (Free vs $0.99) and in-app purchases (none vs 1). On ads and device support there is nothing between them.

そろばん電卓 〜計算を楽しもう〜 is free to download; Abacus Practice costs $0.99 up front. Abacus Practice sells 1 one-off in-app purchase. そろばん電卓 〜計算を楽しもう〜 asks for nothing beyond the download.

そろばん電卓 〜計算を楽しもう〜 ships an update monthly, Abacus Practice every 4 months. Both last shipped on October 16, 2026.

## The numbers

| Metric | そろばん電卓 〜計算を楽しもう〜 | Abacus Practice |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 18 MB |
| Requires iOS | **6.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [suzuki katsuya](https://appshunter.io/developer/448034238) | [SMART BIT K.K](https://appshunter.io/developer/1896559487) |

## What reviewers say

### そろばん電卓 〜計算を楽しもう〜

[App page](https://appshunter.io/ios/app/id1067519909)

This app displays the calculation process of a soroban (abacus) for arithmetic operations entered on a calculator. It visually demonstrates how abacus beads move to solve addition, subtraction, multiplication, and division problems. Users can customize calculation order and bead speed.

**Highlights:** Visual abacus calculation display, Supports addition, subtraction, multiplication, division, Handles negative number subtraction, Customizable bead speed, Customizable multiplication order

**Features:** macOS Compatibility

**In-app purchases:** none


### Abacus Practice

[App page](https://appshunter.io/ios/app/abacus-practice-mental-math/id6770438521)

Practice abacus, mental arithmetic, and calculation skills on your iPhone or iPad. Features a realistic abacus interface for various exercises, including addition, subtraction, multiplication, division, and flash calculations. Track your progress and review your performance over time.

**Highlights:** Realistic abacus interface, Practice addition, subtraction, multiplication, division, Flash and slip calculations, Customizable problem generation, Practice history and performance records, Adjustable settings for sound, vibration, and left-handed mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Proアンロック | $2.99 | one-time |


## Frequently asked questions

### Is そろばん電卓 〜計算を楽しもう〜 free?

そろばん電卓 〜計算を楽しもう〜 is free to download, with no in-app purchases.

### Is Abacus Practice free?

Abacus Practice costs $0.99, and also offers in-app purchases.

### Do そろばん電卓 〜計算を楽しもう〜 or Abacus Practice have ads?

Neither そろばん電卓 〜計算を楽しもう〜 nor Abacus Practice shows ads.

### Which is updated more often, そろばん電卓 〜計算を楽しもう〜 or Abacus Practice?

そろばん電卓 〜計算を楽しもう〜 ships an update monthly, and Abacus Practice every 4 months. Most recently, そろばん電卓 〜計算を楽しもう〜 was updated on October 16, 2026 and Abacus Practice on October 16, 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.*