# FLASH ANZAN (arithmetic) vs Abacus Mental Math Training

The clearest difference is review sentiment: FLASH ANZAN (arithmetic) at 75% against Abacus Mental Math Training's 20%. FLASH ANZAN (arithmetic) also leads on in-app purchases (none vs 1) and ads (none vs shown). Abacus Mental Math Training's advantage is rating (4.1 vs 3.7) and ratings volume (31 vs 3). On price, update cadence and device support there is nothing between them.

Both are free to download. Abacus Mental Math Training sells 1 one-off in-app purchase. FLASH ANZAN (arithmetic) asks for nothing beyond the download.

Abacus Mental Math Training holds the better App Store score, 4.1 against 3.7. That said, the two scores are not equally well evidenced: Abacus Mental Math Training has 31 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 75% of FLASH ANZAN (arithmetic)'s written reviews are positive against 20% of Abacus Mental Math Training's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | FLASH ANZAN (arithmetic) | Abacus Mental Math Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/flash-anzan-arithmetic/id1282325066/reviews) | **[4.1 (31 ratings)](https://appshunter.io/ios/app/abacus-mental-math-training/id6449295111/reviews)** |
| Number of ratings | 3 | **31** |
| Positive reviews | **75.0% of reviews** | 20.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 34 MB |
| Requires iOS | **8.0** | 10.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mako Muraoka Yudai Muraoka](https://appshunter.io/developer/1069915436) | [Peikun Duan](https://appshunter.io/developer/1240254007) |

## What reviewers say

### FLASH ANZAN (arithmetic)

[App page](https://appshunter.io/ios/app/flash-anzan-arithmetic/id1282325066)

Practice mental arithmetic with adjustable settings for digit count, flash speed, and problem quantity. Designed to enhance calculation skills through timed exercises.

**Highlights:** Adjustable number of digits (1-7), Customizable flash time (0.1-3.0 seconds), Selectable number of problems (5-100), Focus on mental calculation

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

**In-app purchases:** none


### Abacus Mental Math Training

[App page](https://appshunter.io/ios/app/abacus-mental-math-training/id6449295111)

This app offers professional training and assessment for abacus mental calculation and flash calculation, adhering to international grading standards. It features challenge and custom modes to help users improve their math and speed calculation skills.

**Highlights:** Adheres to World Abacus Mental Calculation Federation standards, Challenge Mode with 10 levels and 200 stages, Custom Mode for Flash Calculation and Abacus practice, Adjustable calculation parameters (number range, digits, time), Gradual difficulty progression, Simulates exam conditions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.59 | one-time |


## Frequently asked questions

### Is FLASH ANZAN (arithmetic) free?

FLASH ANZAN (arithmetic) is free to download, with no in-app purchases.

### Is Abacus Mental Math Training free?

Abacus Mental Math Training is free to download, with in-app purchases available.

### Which has better reviews, FLASH ANZAN (arithmetic) or Abacus Mental Math Training?

Abacus Mental Math Training is rated higher. FLASH ANZAN (arithmetic) averages 3.7 out of 5 from 3 ratings, while Abacus Mental Math Training averages 4.1 from 31 ratings.

### Do FLASH ANZAN (arithmetic) or Abacus Mental Math Training have ads?

Abacus Mental Math Training shows ads; FLASH ANZAN (arithmetic) does not.

### Which is updated more often, FLASH ANZAN (arithmetic) or Abacus Mental Math Training?

FLASH ANZAN (arithmetic) ships an update monthly, and Abacus Mental Math Training monthly. Most recently, FLASH ANZAN (arithmetic) was updated on October 13, 2026 and Abacus Mental Math Training on October 11, 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.*