# そろばん問題集 vs Abacus Lesson

The clearest difference is update cadence: Abacus Lesson at every 2 weeks against そろばん問題集's every 6 weeks. Abacus Lesson also leads on rating (5.0 vs 4.8) and ratings volume (15 vs 5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. そろばん問題集 sells 1 in-app purchase, starting at $1.99 per month and Abacus Lesson sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Abacus Lesson holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 5 and 15 respectively.

そろばん問題集 ships an update every 6 weeks, Abacus Lesson every 2 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | そろばん問題集 | Abacus Lesson |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (5 ratings)](https://appshunter.io/ios/app/id1527023159/reviews) | **[5.0 (15 ratings)](https://appshunter.io/ios/app/abacus-lesson-multiplication/id1582635868/reviews)** |
| Number of ratings | 5 | **15** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 138 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [takeshi inoue](https://appshunter.io/developer/1452042026) | [Hirokazu Komatsu](https://appshunter.io/developer/1523833531) |

## What reviewers say

### そろばん問題集

[App page](https://appshunter.io/ios/app/id1527023159)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $1.99 | per month |


### Abacus Lesson

[App page](https://appshunter.io/ios/app/abacus-lesson-multiplication/id1582635868)

Learn multiplication using a virtual abacus. This app teaches a simple and fast method for calculating multiplication, emphasizing the mental calculation benefits of the abacus over digital calculators.

**Highlights:** Virtual abacus for multiplication, Simple and fast calculation methods, Focus on mental calculation skills, Step-by-step multiplication lessons, Suitable for beginners

**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 そろばん問題集 free?

そろばん問題集 is free to download, with in-app purchases available.

### Is Abacus Lesson free?

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

### Which has better reviews, そろばん問題集 or Abacus Lesson?

Abacus Lesson is rated higher. そろばん問題集 averages 4.8 out of 5 from 5 ratings, while Abacus Lesson averages 5.0 from 15 ratings.

### Do そろばん問題集 or Abacus Lesson have ads?

Both そろばん問題集 and Abacus Lesson show ads.

### Which is updated more often, そろばん問題集 or Abacus Lesson?

そろばん問題集 ships an update every 6 weeks, and Abacus Lesson every 2 weeks. Most recently, そろばん問題集 was updated on October 24, 2026 and Abacus Lesson on October 27, 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.*