# Addition Math Master vs Mental Calculation & Abacus

The clearest difference is in-app purchases: Mental Calculation & Abacus at none against Addition Math Master's 1. Mental Calculation & Abacus also leads on update cadence (every 6 months vs every 35 months). Addition Math Master's advantage is ads (none vs shown) and iOS requirement (8.0 vs 12.0). On price and device support there is nothing between them.

Both are free to download. Addition Math Master sells 1 one-off in-app purchase. Mental Calculation & Abacus asks for nothing beyond the download.

Addition Math Master ships an update every 35 months, Mental Calculation & Abacus every 6 months. The most recent releases landed on September 4, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Addition Math Master | Mental Calculation & Abacus |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 35 months | **Every 6 months** |
| Monetization | — | Ad-supported |
| Size | 4 MB | 143 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peter Li](https://appshunter.io/developer/424298074) | [Park Jisang](https://appshunter.io/developer/995438886) |

## What reviewers say

### Addition Math Master

[App page](https://appshunter.io/ios/app/addition-math-master/id672669932)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WORK MODE | $0.99 | one-time |


### 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


## Frequently asked questions

### Is Addition Math Master free?

Addition Math Master is free to download, with in-app purchases available.

### Is Mental Calculation & Abacus free?

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

### Do Addition Math Master or Mental Calculation & Abacus have ads?

Mental Calculation & Abacus shows ads; Addition Math Master does not.

### Which is updated more often, Addition Math Master or Mental Calculation & Abacus?

Addition Math Master ships an update every 35 months, and Mental Calculation & Abacus every 6 months. Most recently, Addition Math Master was updated on September 4, 2026 and Mental Calculation & Abacus on September 19, 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.*