# 脳速算

> Inspiration & speed battle! Calculation game to train your brain

Canonical page: [https://chrome-stats.com/d/com.karin.lab.Flashmentamath](https://chrome-stats.com/d/com.karin.lab.Flashmentamath)

## Overview

- **ID:** `com.karin.lab.Flashmentamath`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Karin Lab
- **Category:** GAME\_CASUAL
- **Downloads:** 6
- **Version:** 1.0.3
- **Last updated:** 2026-05-16
- **First published:** 2025-06-22
- **Publisher country:** JP
- **Size:** 48 MB
- **Data as of:** 2026-09-05
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.karin.lab.Flashmentamath)
- **Website:** [https://www.karineffort.com/](https://www.karineffort.com/)
- **Privacy policy:** [https://www.termsfeed.com/live/b9b7975c-26d4-45c7-85aa-477156266447](https://www.termsfeed.com/live/b9b7975c-26d4-45c7-85aa-477156266447)

## Description

Brain Speed ​​Calculation is a brain training game that trains your calculation skills and explosive power through flash mental calculations and speed calculations. Take on simple but deep calculation challenges and keep updating your score!<br><br>How to play &amp; features<br>・Flash mental arithmetic mode – Calculate and answer the numbers displayed in order!<br>・Quick Calculation Mode – Solve as many calculations as possible within the time limit and compete for the highest score!<br>・You can choose the difficulty level – from beginner to advanced, you can challenge yourself at the level that suits you!<br>・Score recording function – Check your score for different modes and difficulty levels and aim for your personal best!<br>・ New modes will be added in the future! – Scheduled to be updated to allow you to enjoy various calculation challenges

## Rankings

- #2,895,647 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.MODIFY_AUDIO_SETTINGS`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.RECORD_AUDIO`
- `android.permission.SYSTEM_ALERT_WINDOW`
- `android.permission.USE_BIOMETRIC`
- `android.permission.USE_FINGERPRINT`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `android.permission.WRITE_EXTERNAL_STORAGE`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.gms.permission.AD_ID`
- `com.karin.lab.Flashmentamath.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.karin.lab.Flashmentamath)