# Mental Calculation & Abacus vs Arithmetic King

The clearest difference is ads: Arithmetic King at none against Mental Calculation & Abacus's shown. Arithmetic King also leads on update cadence (every 3 weeks vs every 6 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Mental Calculation & Abacus ships an update every 6 months, Arithmetic King every 3 weeks. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Mental Calculation & Abacus | Arithmetic King |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/mental-calculation-and-abacus/id1582407909/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 143 MB | 48 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Park Jisang](https://appshunter.io/developer/995438886) | [杰超 杨](https://appshunter.io/developer/1364053114) |

## What reviewers say

### Mental Calculation & Abacus

[App page](https://appshunter.io/ios/app/mental-calculation-and-abacus/id1582407909)

Engage in a fun and educational game designed to enhance mental calculation skills. Learn to use an abacus with an easy-to-follow tutorial and practice with diverse question types.

**Highlights:** Mental calculation practice, Abacus learning tutorial, Variety of practice questions, Suitable for all ages

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

**In-app purchases:** none


### Arithmetic King

[App page](https://appshunter.io/ios/app/arithmetic-king/id1589684255)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mental Calculation & Abacus free?

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

### Is Arithmetic King free?

Arithmetic King is free to download, with no in-app purchases.

### Do Mental Calculation & Abacus or Arithmetic King have ads?

Mental Calculation & Abacus shows ads; Arithmetic King does not.

### Which is updated more often, Mental Calculation & Abacus or Arithmetic King?

Mental Calculation & Abacus ships an update every 6 months, and Arithmetic King every 3 weeks. Most recently, Mental Calculation & Abacus was updated on October 16, 2026 and Arithmetic King on October 8, 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.*