# abacus shapes vs Flash Mental Math

The clearest difference is update cadence: abacus shapes at every 6 weeks against Flash Mental Math's every 3 months. abacus shapes also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

abacus shapes ships an update every 6 weeks, Flash Mental Math every 3 months. The most recent releases landed on September 22, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | abacus shapes | Flash Mental Math |
| --- | --- | --- |
| 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 6 weeks** | Every 3 months |
| Monetization | — | Ad-supported |
| Size | 90 MB | 14 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [taijun sawano](https://appshunter.io/developer/1370412660) | [Ryouhei Azuma](https://appshunter.io/developer/1353297781) |

## What reviewers say

### abacus shapes

[App page](https://appshunter.io/ios/app/abacus-shapes/id1370412661)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is abacus shapes free?

abacus shapes is free to download, with no in-app purchases.

### Is Flash Mental Math free?

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

### Do abacus shapes or Flash Mental Math have ads?

Both abacus shapes and Flash Mental Math show ads.

### Which is updated more often, abacus shapes or Flash Mental Math?

abacus shapes ships an update every 6 weeks, and Flash Mental Math every 3 months. Most recently, abacus shapes was updated on September 22, 2026 and Flash Mental Math on September 29, 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.*