# 脳トレ！暗算50問

> No difficult multiplication and division calculations! It is a simple calculation training app that only adds and subtracts

Canonical page: [https://chrome-stats.com/d/com.harohani.Calculation](https://chrome-stats.com/d/com.harohani.Calculation)

## Overview

- **ID:** `com.harohani.Calculation`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** ハロハニー
- **Category:** GAME\_EDUCATIONAL
- **Downloads:** 40
- **Last updated:** 2026-02-10
- **First published:** 2021-07-20
- **Publisher country:** JP
- **Data as of:** 2026-09-15
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.harohani.Calculation)
- **Website:** [https://k013a2065.wp.xdomain.jp/new/](https://k013a2065.wp.xdomain.jp/new/)
- **Privacy policy:** [https://haro99.github.io/privacypolicy.html](https://haro99.github.io/privacypolicy.html)

## Description

It&#39;s a super simple mental arithmetic game.<br>There are only two difficulty levels, one is a one-digit problem and the other is two-digit addition, subtraction, and problem.<br>App features<br>-Since it does not use difficult Chinese characters, it is easy for children to play.<br>・ Since simple calculation of addition and subtraction comes out, even for children who want to practice calculation<br>It is also recommended for elderly people who want to do some brain teaser.<br>・ If you answer correctly in a row, you will get a high score.<br>・ There are rankings for each difficulty level, so aim for the top three.

## Rankings

- #2,350,273 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.harohani.Calculation)