# Mental Abacus Book 3 vs Fractions Using Visual Models

The clearest difference is price: Fractions Using Visual Models at $2.99 against Mental Abacus Book 3's $8.99. Mental Abacus Book 3's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 15.6). On update cadence, ads and in-app purchases there is nothing between them.

Mental Abacus Book 3 costs $8.99 and Fractions Using Visual Models $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mental Abacus Book 3 ships an update every 20 months, Fractions Using Visual Models every 28 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Mental Abacus Book 3 | Fractions Using Visual Models |
| --- | --- | --- |
| Price | $8.99 | **$2.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 20 months** | Every 28 months |
| Size | 13 MB | 162 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hamster Force Multimedia Ltd.](https://appshunter.io/developer/443416476) | [Red Hong](https://appshunter.io/developer/542314714) |

## What reviewers say

### Mental Abacus Book 3

[App page](https://appshunter.io/ios/app/mental-abacus-book-3/id1054868136)

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

**In-app purchases:** none


### Fractions Using Visual Models

[App page](https://appshunter.io/ios/app/fractions-using-visual-models/id1167270272)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mental Abacus Book 3 free?

Mental Abacus Book 3 costs $8.99, with no in-app purchases.

### Is Fractions Using Visual Models free?

Fractions Using Visual Models costs $2.99, with no in-app purchases.

### Do Mental Abacus Book 3 or Fractions Using Visual Models have ads?

Neither Mental Abacus Book 3 nor Fractions Using Visual Models shows ads.

### Which is updated more often, Mental Abacus Book 3 or Fractions Using Visual Models?

Mental Abacus Book 3 ships an update every 20 months, and Fractions Using Visual Models every 28 months. Most recently, Mental Abacus Book 3 was updated on October 26, 2026 and Fractions Using Visual Models on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*