# (Open Source) Mental Math

> Fast arithmetic training

Canonical page: [https://chrome-stats.com/d/id6788418444](https://chrome-stats.com/d/id6788418444)

## Overview

- **ID:** `id6788418444`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** AHMET EMRE DEDELER
- **Category:** Education
- **Rating:** 3.00 / 5 (2 ratings)
- **Version:** 1.0.2
- **Last updated:** 2026-09-14
- **First published:** 2026-07-14
- **Size:** 40 MB
- **Data as of:** 2026-09-23
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/open-source-mental-math/id6788418444)
- **Website:** [https://github.com/Open-Apps-Studio/mental-math](https://github.com/Open-Apps-Studio/mental-math)
- **Privacy policy:** [https://open-apps-studio.github.io/openmath/privacy/](https://open-apps-studio.github.io/openmath/privacy/)

## Description

Free, open-source mental math training. Timed tests, custom drills, tricks — no paywalls.

A free, open-source mental math trainer. No ads, no paywalls, no locked content — every exercise and difficulty is included.

Sharpen your arithmetic with quick timed tests, custom drills, and a library of mental-math tricks. Everything runs offline and your progress stays on your device.

FEATURES

Timed Tests
A daily 60-second challenge plus sprints, a two-minute marathon, per-operation tests, and a hard mixed test — each with best scores.

Custom Trainer
Pick a number domain (Times tables, Natural, Decimal, Money, Huge), choose one or more exercises, and set per-exercise difficulty from Easy to Super hard.

All the Operations
Addition, subtraction, multiplication, division, squares, square roots, fractions, percentages, and modulo.

Mental Math Tricks
Dozens of step-by-step tricks for faster addition, subtraction, multiplication, division, and squares — with worked examples and favorites.

Progress Tracking
Solved totals, accuracy, best run, daily streak, longest streak, and a weekly activity view.

Fast Sessions
An on-screen keypad with instant answer checking, haptics, and sound.

No ads. No paywalls. No account required.

100% Open Source
The complete source code is public - see it, audit it, or contribute at https://github.com/Open-Apps-Studio/mental-math

## Rankings

- #723,449 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6788418444)