# そろばん暗算の計算なら そろばんDANQ vs Flash Mental Math (Anzan)

The clearest difference is rating: Flash Mental Math (Anzan) at 5.0 against そろばん暗算の計算なら そろばんDANQ's 3.0. Flash Mental Math (Anzan) also leads on update cadence (every 10 days vs monthly) and ratings volume (3 vs 1). そろばん暗算の計算なら そろばんDANQ's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price 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. そろばん暗算の計算なら そろばんDANQ asks for nothing beyond the download.

Flash Mental Math (Anzan) holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

そろばん暗算の計算なら そろばんDANQ ships an update monthly, Flash Mental Math (Anzan) every 10 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | そろばん暗算の計算なら そろばんDANQ | Flash Mental Math (Anzan) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/danq/id1477001457/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/flash-mental-math-anzan/id6749636736/reviews)** |
| Number of ratings | 1 | **3** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 74 MB | 54 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oriens, Inc.](https://appshunter.io/developer/1477001456) | [SIC Company Limited](https://appshunter.io/developer/1800842356) |

## What reviewers say

### そろばん暗算の計算なら そろばんDANQ

[App page](https://appshunter.io/ios/app/danq/id1477001457)

This app is designed for serious practice of abacus calculation and mental abacus. It offers automatic scoring and re-presents incorrect problems for efficient learning. Practice with problems used by over 100 million people, covering all levels from beginner to advanced.

**Highlights:** Abacus calculation practice, Mental abacus training, Automatic scoring, Adaptive problem re-presentation, Progress visualization with graphs, Problems from a leading Japanese publisher

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is そろばん暗算の計算なら そろばんDANQ free?

そろばん暗算の計算なら そろばんDANQ is free to download, with no in-app purchases.

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

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

### Which has better reviews, そろばん暗算の計算なら そろばんDANQ or Flash Mental Math (Anzan)?

Flash Mental Math (Anzan) is rated higher. そろばん暗算の計算なら そろばんDANQ averages 3.0 out of 5 from 1 ratings, while Flash Mental Math (Anzan) averages 5.0 from 3 ratings.

### Do そろばん暗算の計算なら そろばんDANQ or Flash Mental Math (Anzan) have ads?

Flash Mental Math (Anzan) shows ads; そろばん暗算の計算なら そろばんDANQ does not.

### Which is updated more often, そろばん暗算の計算なら そろばんDANQ or Flash Mental Math (Anzan)?

そろばん暗算の計算なら そろばんDANQ ships an update monthly, and Flash Mental Math (Anzan) every 10 days. Most recently, そろばん暗算の計算なら そろばんDANQ was updated on October 6, 2026 and Flash Mental Math (Anzan) on October 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.*