# 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 (every 2 weeks 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 every 2 weeks, 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 (14 ratings)](https://appshunter.io/ios/app/abacus-lesson-multiplication/id1582635868/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 138 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-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 |


### 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 every 2 weeks, 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.*