# フラッシュ暗算検定模試（協会） vs Soroban66

The clearest difference is review sentiment: Soroban66 at 100% against フラッシュ暗算検定模試（協会）'s 0%. Soroban66 also leads on update cadence (every 3 weeks vs every 28 months). フラッシュ暗算検定模試（協会）'s advantage is iOS requirement (8.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

フラッシュ暗算検定模試（協会） costs $3.99 and Soroban66 $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

フラッシュ暗算検定模試（協会） ships an update every 28 months, Soroban66 every 3 weeks. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | フラッシュ暗算検定模試（協会） | Soroban66 |
| --- | --- | --- |
| Price | $3.99 | $3.99 |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/id879920206/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 15 MB | 29 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Yuji Miyamoto](https://appshunter.io/developer/417390646) | [Masashi Fujishiro](https://appshunter.io/developer/1619460749) |

## What reviewers say

### フラッシュ暗算検定模試（協会）

[App page](https://appshunter.io/ios/app/id879920206)

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

**In-app purchases:** none


### Soroban66

[App page](https://appshunter.io/ios/app/soroban66/id1661734047)

Practice multiplication, division, and addition with customizable difficulty. Includes dictation exercises and a flash anzan mode for rapid calculation. Offers personalized routines and timed challenges.

**Highlights:** Multiplication and division practice, Customizable addition exercises, Number dictation for sums, Flash Anzan rapid calculation, Personalized routine creation, Timed challenges

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

**In-app purchases:** none


## Frequently asked questions

### Is フラッシュ暗算検定模試（協会） free?

フラッシュ暗算検定模試（協会） costs $3.99, with no in-app purchases.

### Is Soroban66 free?

Soroban66 costs $3.99, with no in-app purchases.

### Do フラッシュ暗算検定模試（協会） or Soroban66 have ads?

Neither フラッシュ暗算検定模試（協会） nor Soroban66 shows ads.

### Which is updated more often, フラッシュ暗算検定模試（協会） or Soroban66?

フラッシュ暗算検定模試（協会） ships an update every 28 months, and Soroban66 every 3 weeks. Most recently, フラッシュ暗算検定模試（協会） was updated on November 11, 2026 and Soroban66 on November 3, 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.*