# Flash Mental Math (Anzan) vs Simple Soroban (Abacus)

The clearest difference is in-app purchases: Simple Soroban (Abacus) at none against Flash Mental Math (Anzan)'s 1. Simple Soroban (Abacus) also leads on ads (none vs shown). Flash Mental Math (Anzan)'s advantage is iOS requirement (15.0 vs 18.3). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Flash Mental Math (Anzan) sells 1 in-app purchase, starting at $0.99 per month. Simple Soroban (Abacus) asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Flash Mental Math (Anzan) against 5.0 for Simple Soroban (Abacus). Both are backed by a comparable volume of ratings — 3 and 3 respectively.

## The numbers

| Metric | Flash Mental Math (Anzan) | Simple Soroban (Abacus) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/flash-mental-math-anzan/id6749636736/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/simple-soroban-abacus/id6787463185/reviews) |
| Number of ratings | 3 | 3 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 54 MB | 3 MB |
| Requires iOS | **15.0** | 18.3 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SIC Company Limited](https://appshunter.io/developer/1800842356) | [Bruno Takahashi Carvalhas de Oliveira](https://appshunter.io/developer/1860732734) |

## What reviewers say

### Flash Mental Math (Anzan)

[App page](https://appshunter.io/ios/app/flash-mental-math-anzan/id6749636736)

This app helps users of all ages improve their mental math and calculation speed. Numbers flash on screen briefly, training quick thinking and concentration. It's ideal for children preparing for abacus certification, students needing math test prep, or adults seeking brain training.

**Highlights:** Flash number display for quick thinking, Adjustable difficulty levels, Global and classroom rankings, No account registration required, Supports multiple languages, Intuitive interface for children

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |


### Simple Soroban (Abacus)

[App page](https://appshunter.io/ios/app/simple-soroban-abacus/id6787463185)

Learn and practice Japanese abacus calculations with interactive tutorials and multiple modes. Customize your abacus experience and improve mental math skills with this completely free educational tool.

**Highlights:** Interactive tutorials for arithmetic, Freeform, Relax, Challenge, and Anzan modes, Configurable 7 or 9-column soroban, Multiple color themes, No ads or in-app purchases, Mental calculation training

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

**In-app purchases:** none


## Frequently asked questions

### Is Flash Mental Math (Anzan) free?

Flash Mental Math (Anzan) is free to download, with in-app purchases available.

### Is Simple Soroban (Abacus) free?

Simple Soroban (Abacus) is free to download, with no in-app purchases.

### Which has better reviews, Flash Mental Math (Anzan) or Simple Soroban (Abacus)?

Flash Mental Math (Anzan) and Simple Soroban (Abacus) are both rated 5.0 out of 5 on the App Store, from 3 and 3 ratings respectively.

### Do Flash Mental Math (Anzan) or Simple Soroban (Abacus) have ads?

Flash Mental Math (Anzan) shows ads; Simple Soroban (Abacus) does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*