# Flash Mental Math vs Abacus Mental Maths

The clearest difference is iOS requirement: Abacus Mental Maths at 12.0 against Flash Mental Math's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on August 3, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Flash Mental Math | Abacus Mental Maths |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (18 ratings)](https://appshunter.io/ios/app/flash-mental-math-simple/id1547944841/reviews)** | — |
| Number of ratings | **18** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Ad-supported | — |
| Size | 14 MB | 56 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryouhei Azuma](https://appshunter.io/developer/1353297781) | [Blue Castle Studios](https://appshunter.io/developer/1465237858) |

## What reviewers say

### Flash Mental Math

[App page](https://appshunter.io/ios/app/flash-mental-math-simple/id1547944841)

Practice mental arithmetic with various difficulty levels and custom modes. This app serves as a brain training tool to enhance calculation skills.

**Highlights:** Mental arithmetic practice, Easy, normal, and difficult modes, Customizable modes, Brain training, Calculation skill improvement

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

**In-app purchases:** none


### 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 Flash Mental Math free?

Flash Mental Math is free to download, with no in-app purchases.

### Is Abacus Mental Maths free?

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

### Do Flash Mental Math or Abacus Mental Maths have ads?

Both Flash Mental Math and Abacus Mental Maths show ads.

### Which is updated more often, Flash Mental Math or Abacus Mental Maths?

Flash Mental Math ships an update every 3 months, and Abacus Mental Maths every 3 months. Most recently, Flash Mental Math was updated on August 3, 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.*