# Calculator & abacus training vs FLASH ANZAN (arithmetic)

The clearest difference is rating: FLASH ANZAN (arithmetic) at 3.7 against Calculator & abacus training's 1.0. FLASH ANZAN (arithmetic) also leads on in-app purchases (none vs 1) and ads (none vs shown). Calculator & abacus training's advantage is review sentiment (86% vs 75%). On price and device support there is nothing between them.

Both are free to download. Calculator & abacus training sells 1 one-off in-app purchase. FLASH ANZAN (arithmetic) asks for nothing beyond the download.

FLASH ANZAN (arithmetic) holds the better App Store score, 3.7 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews complicate that: 86% of Calculator & abacus training's written reviews are positive against 75% of FLASH ANZAN (arithmetic)'s, so the app with the better star average is not the one people write more warmly about.

Calculator & abacus training ships an update every 2 months, FLASH ANZAN (arithmetic) monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Calculator & abacus training | FLASH ANZAN (arithmetic) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/calculator-and-abacus-training/id1092519812/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/flash-anzan-arithmetic/id1282325066/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | **85.7% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 17 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kenji kiuchi](https://appshunter.io/developer/553473005) | [Mako Muraoka Yudai Muraoka](https://appshunter.io/developer/1069915436) |

## What reviewers say

### Calculator & abacus training

[App page](https://appshunter.io/ios/app/calculator-and-abacus-training/id1092519812)

Enhance your math skills with calculation drills for abacus and calculator. Customize training sessions for addition, subtraction, multiplication, and division, with advanced options available after purchase. Challenge yourself in a mode where problems increase in difficulty.

**Highlights:** Abacus and calculator training, Customizable training modes, Addition, subtraction, multiplication, division, Progress tracking, Challenge mode with increasing difficulty, Up to 5-digit calculations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad & All function release | $9.99 | one-time |


### 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


## Frequently asked questions

### Is Calculator & abacus training free?

Calculator & abacus training is free to download, with in-app purchases available.

### Is FLASH ANZAN (arithmetic) free?

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

### Which has better reviews, Calculator & abacus training or FLASH ANZAN (arithmetic)?

FLASH ANZAN (arithmetic) is rated higher. Calculator & abacus training averages 1.0 out of 5 from 1 ratings, while FLASH ANZAN (arithmetic) averages 3.7 from 3 ratings.

### Do Calculator & abacus training or FLASH ANZAN (arithmetic) have ads?

Calculator & abacus training shows ads; FLASH ANZAN (arithmetic) does not.

### Which is updated more often, Calculator & abacus training or FLASH ANZAN (arithmetic)?

Calculator & abacus training ships an update every 2 months, and FLASH ANZAN (arithmetic) monthly. Most recently, Calculator & abacus training was updated on November 2, 2026 and FLASH ANZAN (arithmetic) 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.*