# Calculation Training

> Sharpen your mental math: fast arithmetic, fractions, and ratio comparison.

Canonical page: [https://chrome-stats.com/d/com.mostlyclear.calculationpractice](https://chrome-stats.com/d/com.mostlyclear.calculationpractice)

## Overview

- **ID:** `com.mostlyclear.calculationpractice`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** MostlyClear. J
- **Category:** EDUCATION
- **Downloads:** 472
- **Version:** 4.0.1
- **Last updated:** 2026-10-15
- **First published:** 2026-08-03
- **Publisher country:** KR
- **Size:** 6.77 MB
- **Data as of:** 2026-11-08
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.mostlyclear.calculationpractice)
- **Privacy policy:** [https://app.notion.com/p/26598c7539608012b060e297bac6d435](https://app.notion.com/p/26598c7539608012b060e297bac6d435)

## Description

Train the mental math you need for aptitude tests, case interviews, and everyday number sense.<br><br>• Arithmetic training: addition, subtraction, multiplication, and division, from 1-digit up to 5-digit numbers<br>• Comparison training: quickly judge which is bigger — fractions, products, sums, growth and decrease rates, and multiples<br>• Past exam training: comparison items from real Korean data interpretation exams<br>• Statistics: accuracy and solving-time trends, plus detailed stats by question type<br>• Wrong answer notes for focused review<br><br>Supports English and Korean.

## Rankings

- #1,364,763 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.INTERNET`
- `android.permission.VIBRATE`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.mostlyclear.calculationpractice.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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