# Mental Abacus Book 3 vs Abacus Simulator

The clearest difference is price: Abacus Simulator at Free against Mental Abacus Book 3's $8.99. Abacus Simulator also leads on update cadence (every 3 weeks vs every 20 months). Mental Abacus Book 3's advantage is in-app purchases (none vs 10) and iOS requirement (8.0 vs 13.0). On ads and device support there is nothing between them.

Abacus Simulator is free to download; Mental Abacus Book 3 costs $8.99 up front. Abacus Simulator sells 10 one-off in-app purchases. Mental Abacus Book 3 asks for nothing beyond the download.

Mental Abacus Book 3 ships an update every 20 months, Abacus Simulator every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Mental Abacus Book 3 | Abacus Simulator |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | — | **[4.7 (41 ratings)](https://appshunter.io/ios/app/abacus-simulator/id1558355099/reviews)** |
| Number of ratings | — | **41** |
| Positive reviews | — | 72.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 13 MB | 41 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hamster Force Multimedia Ltd.](https://appshunter.io/developer/443416476) | [Nicholas Ang](https://appshunter.io/developer/1558355101) |

## 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


### Abacus Simulator

[App page](https://appshunter.io/ios/app/abacus-simulator/id1558355099)

Enhance your mental math abilities with interactive abacus exercises. This app offers guided lessons and daily drills to improve calculation speed, focus, and accuracy. Customize your abacus for a fun and engaging learning experience.

**Highlights:** Interactive abacus exercises, Guided step-by-step lessons, Daily skill-sharpening exercises, Focus, speed, and accuracy improvement, Customizable abacus

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cloud Beads | $1.99 | one-time |
| Coconut Beads | $1.99 | one-time |
| Lemon Beads | $1.99 | one-time |
| Mushroom Beads | $1.99 | one-time |
| Penguin Beads | $1.99 | one-time |
| Flower Beads | $1.99 | one-time |
| Orange Beads | $1.99 | one-time |
| Snail Beads | $1.99 | one-time |
| Snowman Beads | $1.99 | one-time |
| Watermelon Beads | $1.99 | one-time |


## Frequently asked questions

### Is Mental Abacus Book 3 free?

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

### Is Abacus Simulator free?

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

### Do Mental Abacus Book 3 or Abacus Simulator have ads?

Neither Mental Abacus Book 3 nor Abacus Simulator shows ads.

### Which is updated more often, Mental Abacus Book 3 or Abacus Simulator?

Mental Abacus Book 3 ships an update every 20 months, and Abacus Simulator every 3 weeks. Most recently, Mental Abacus Book 3 was updated on October 26, 2026 and Abacus Simulator 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.*