# NumDrill - Math You Can't Stop

> Sharpen Your Brain, Every Day

Canonical page: [https://chrome-stats.com/d/id6752035917](https://chrome-stats.com/d/id6752035917)

## Overview

- **ID:** `id6752035917`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** KEN ITAKURA
- **Category:** Education
- **Version:** 1.1.0
- **Last updated:** 2026-07-04
- **First published:** 2026-06-04
- **Size:** 111 MB
- **Data as of:** 2026-09-25
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/numdrill-math-you-cant-stop/id6752035917)
- **Website:** [https://ken-itakura.github.io/](https://ken-itakura.github.io/)
- **Privacy policy:** [https://ken-itakura.github.io/appdocs/NumDrill/privacy/](https://ken-itakura.github.io/appdocs/NumDrill/privacy/)

## Description

Relying too much on calculators and AI? Get your number sense back. Drills from arithmetic to trig and logs. Compete on global leaderboards!

Can you still calculate a tip, split a bill, or work out a percentage in your head?

Every time you reach for a calculator or ask AI, your mental math skills quietly fade. The good news: they come back fast with regular practice.

NumDrill is a focused mental math drill app designed for short, satisfying sessions. Instead of mindless scrolling or another mobile game, sharpen the brain you already have.

■ Who it's for
· Anyone whose mental math has gotten rusty from over-relying on calculators or AI
· Students preparing for exams or standardized tests
· Professionals who want to stay mentally sharp
· Anyone who suspects they're wasting time on games but keeps playing anyway

■ 10 Problem Categories
- Arithmetic (addition, subtraction, multiplication, division — customize digits & decimals)
- Quadratic expressions (factoring & expansion)
- Trigonometry (sin / cos / tan values)
- Square roots
- Logarithms & Exponents
- Ratio & Percentage (everyday percentage calculations)
- Make10 / Make24 (card-based number puzzles)
- Memory (memorize and recall grids of numbers & icons)
- Mastermind (deduce a hidden number sequence with logic)
- Calculator mode (Practice mental arithmetic using calculation patterns you frequently use in everyday life)

■ 3 Play Modes
- Count / Timed / Endless

■ Features that keep you coming back
- Streaks / Combos / XP / Global Leaderboards / Social Share

■ Customizable
- Difficulty / Advance rules / Sound & Vibration

Your brain is a muscle. Five minutes a day is all it takes.
Open NumDrill.

## Rankings

- #2,050,535 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6752035917)