# そろばん電卓 〜計算を楽しもう〜 vs Abacus Lesson

The clearest difference is review sentiment: Abacus Lesson 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 in-app purchases (none vs 3) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Abacus Lesson sells 3 one-off in-app purchases. そろばん電卓 〜計算を楽しもう〜 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | そろばん電卓 〜計算を楽しもう〜 | Abacus Lesson |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (8 ratings)](https://appshunter.io/ios/app/abacus-lesson-division/id1593317741/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 132 MB |
| Requires iOS | **6.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [suzuki katsuya](https://appshunter.io/developer/448034238) | [Hirokazu Komatsu](https://appshunter.io/developer/1523833531) |

## 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 Lesson

[App page](https://appshunter.io/ios/app/abacus-lesson-division/id1593317741)

Learn the simple and fast method of division using an abacus. This app focuses on developing mental calculation skills by leveraging the abacus technique. It's recommended to master addition, subtraction, and multiplication with an abacus first.

**Highlights:** Learn abacus division techniques, Develop mental calculation skills, Focus on Soroban method, Step-by-step division instruction, Builds on addition, subtraction, multiplication

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation Lv1 for hiding Ad | $1.99 | one-time |
| Donation Lv2 for hiding Ad | $3.99 | one-time |
| Donation Lv3 for hiding Ad | $8.99 | 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 Lesson free?

Abacus Lesson is free to download, with in-app purchases available.

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

Abacus Lesson shows ads; そろばん電卓 〜計算を楽しもう〜 does not.

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

そろばん電卓 〜計算を楽しもう〜 ships an update monthly, and Abacus Lesson monthly. Most recently, そろばん電卓 〜計算を楽しもう〜 was updated on October 29, 2026 and Abacus Lesson on October 24, 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.*