# Mental Math Challenge

> Offline timed mental math drills. Keypad answers, daily practice, local stats.

Canonical page: [https://chrome-stats.com/d/com.mental.mathchallenge](https://chrome-stats.com/d/com.mental.mathchallenge)

## Overview

- **ID:** `com.mental.mathchallenge`
- **Platform:** Android
- **Type:** Android app
- **Status:** Removed
- **Publisher:** MORATRIX LLC
- **Category:** EDUCATION
- **Downloads:** 49
- **Version:** 1.0.0
- **Last updated:** 2026-08-07
- **First published:** 2026-08-07
- **Publisher country:** US
- **Size:** 46 MB
- **Data as of:** 2026-09-11
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.mental.mathchallenge)
- **Privacy policy:** [https://moratrix.cloud/privacy.html](https://moratrix.cloud/privacy.html)

## Description

Train mental math with short timed drills. The app works fully offline, and your progress stays on your phone.<br><br>Mental Math Challenge helps you build speed and accuracy across addition, subtraction, multiplication, and division. Type every answer on a number keypad instead of guessing from multiple choices. After each round you get a clear score, then you can review the questions you missed.<br><br>Focused practice<br>• Short timed rounds make it easy to practice every day<br>• Keypad entry builds genuine recall and calculation speed<br>• Results show your score, accuracy, and best streak<br>• Choose Normal or Hard to match your current level<br><br>Five practice modes<br>• Addition: start with familiar sums and work up to larger addends<br>• Subtraction: practice accurate calculations with non-negative results<br>• Multiplication: strengthen times tables and wider factor ranges<br>• Division: solve clean problems with exact integer answers<br>• Mix: rotate through all four operations in one session<br><br>Daily practice<br>Complete one consistent drill based on your device date. The question set stays the same throughout the day, so you can focus on improving your own time and accuracy.<br><br>Learn from mistakes<br>Review missed questions after a round and revisit the calculations that need more attention. Save favorite problems for later so you can return to the ones that still feel slow.<br><br>Private and offline<br>• Practice without an internet connection<br>• No account is required<br>• Progress, streaks, history, and mistakes stay on your device<br>• Export or import a local JSON backup when you want a copy<br><br>Make it your own<br>Choose your round duration and difficulty. Turn sound and haptic feedback on or off. Set an optional daily reminder if you want a nudge to keep the habit going.<br><br>Who is it for?<br>Mental Math Challenge is made for students building arithmetic skills, adults who want a short daily workout for their mind, and anyone who prefers calm, focused calculation practice without ads or extra noise.<br><br>Pick a mode, start the timer, and sharpen one answer at a time.

## Permissions and access

### Permissions

- `android.permission.POST_NOTIFICATIONS`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.SCHEDULE_EXACT_ALARM`
- `android.permission.VIBRATE`
- `com.android.vending.CHECK_LICENSE`
- `com.mental.mathchallenge.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Similar extensions and apps

- [Mental Math: Offline Math Game](https://chrome-stats.com/d/com.newtan.mentalmath) — 1,658 users
- [Mental Math](https://chrome-stats.com/d/com.husseinSh.MathMindCalc) — 51 users
- [Quick Brain Mental Math](https://chrome-stats.com/d/com.mentalmathtrainer) — 39 users
- [Mental Math Trainer](https://chrome-stats.com/d/com.sdtareq.whetstone) — 21 users
- [Skillsfit: Mental Math Trainer](https://chrome-stats.com/d/space.skillsfit.mentalmathtrainer) — 39 users
- [Simple Mental Math Practice](https://chrome-stats.com/d/com.endevlab.simplemath) — 261 users
- [MathyApp](https://chrome-stats.com/d/com.evenclose.mathyapp)
- [Mathify: Mental Math Practice](https://chrome-stats.com/d/com.v.nevi.p.sv.android.math) — 13,769 users, 4.60 / 5
- [Mental Math Care](https://chrome-stats.com/d/com.tmtnine9.mentalmathcare) — 151 users
- [Math Challenge](https://chrome-stats.com/d/com.elm_cr4.mentalmathchallenge) — 57 users
- [MathTrainer: Brain Practice](https://chrome-stats.com/d/com.sat.mathtrainer) — 46 users
- [Math Practice: Mental Math](https://chrome-stats.com/d/com.enesk6u.mathsprint) — 43 users

---

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