# Abacus Lesson vs Abacus Mental Maths

The clearest difference is in-app purchases: Abacus Mental Maths at none against Abacus Lesson's 3. Abacus Lesson's advantage is update cadence (monthly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Abacus Lesson sells 3 one-off in-app purchases. Abacus Mental Maths asks for nothing beyond the download.

Abacus Lesson ships an update monthly, Abacus Mental Maths every 3 months. The most recent releases landed on September 21, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Abacus Lesson | Abacus Mental Maths |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/abacus-lesson-division/id1593317741/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 132 MB | 56 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hirokazu Komatsu](https://appshunter.io/developer/1523833531) | [Blue Castle Studios](https://appshunter.io/developer/1465237858) |

## What reviewers say

### 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 |


### Abacus Mental Maths

[App page](https://appshunter.io/ios/app/abacus-mental-maths/id6451128513)

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

**In-app purchases:** none


## Frequently asked questions

### Is Abacus Lesson free?

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

### Is Abacus Mental Maths free?

Abacus Mental Maths is free to download, with no in-app purchases.

### Do Abacus Lesson or Abacus Mental Maths have ads?

Both Abacus Lesson and Abacus Mental Maths show ads.

### Which is updated more often, Abacus Lesson or Abacus Mental Maths?

Abacus Lesson ships an update monthly, and Abacus Mental Maths every 3 months. Most recently, Abacus Lesson was updated on September 21, 2026 and Abacus Mental Maths on September 7, 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.*