(Open Source) Mental Math

(Open Source) Mental Math

Fast arithmetic training

2 ratings
1 review
Free

Details

  • Released
  • Updated
  • July 14, 2026
  • September 14, 2026

Features

(Open Source) Mental Math screenshot #1 for iPhone
(Open Source) Mental Math screenshot #2 for iPhone
(Open Source) Mental Math screenshot #3 for iPhone
(Open Source) Mental Math screenshot #4 for iPhone
(Open Source) Mental Math screenshot #5 for iPhone
(Open Source) Mental Math screenshot #6 for iPhone
(Open Source) Mental Math screenshot #7 for iPhone
(Open Source) Mental Math screenshot #8 for iPhone
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About

This application offers a free, open-source platform for practicing mental arithmetic. It features timed tests, custom drills, and a comprehensive library of mental math tricks. All content is available offline without ads or paywalls.

Timed arithmetic tests
Customizable drills
Mental math tricks library
Offline progress tracking
Multiple operation types
Fast session interface
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What's New in (Open Source) Mental Math

1.0.2

September 14, 2026

- Fixed a rounding bug in percent-of-money problems that occasionally marked correct answers wrong - Keypad now adapts to your region's decimal separator (. or ,) and handles negative inputs properly - Timed test countdown now stays accurate if you switch apps or lock your phone - Untimed trainer clock now ticks continuously during drills - Progress stats, best scores, and streaks now update instantly across all screens - Fixed an issue where opening saved tricks from favorites could show Trick not found - Settings now displays the current app version accurately

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User reviews

So bad

Gives wrong answers.

Response from developer

You were right — there was a rounding tie bug in percent and money calculations that could mark correct answers wrong. That is completely fixed in version 1.0.2, and we verified every question generator across 200,000 test cases. Give the update a try.

Developer apps

FAQ

What is the learning methodology of Mental Math?

Mental Math focuses on practice through timed tests, custom drills, and learning specific mental math tricks. It emphasizes repetition and immediate feedback to build speed and accuracy in arithmetic.

How does Mental Math track user progress?

Progress tracking includes solved totals, accuracy rates, best performance runs, and daily/longest streaks. A weekly activity view provides an overview of practice engagement.

Does Mental Math offer certifications?

This application does not offer formal certifications. Its focus is on skill improvement through practice and self-assessment of performance metrics.

Can I use Mental Math offline?

Yes, all exercises and content within Mental Math run offline. Your progress is saved directly on your device, ensuring accessibility without an internet connection.

What devices are supported by Mental Math?

Mental Math is supported on iPhones and iPads, making it accessible to a wide range of Apple mobile users.

Does Mental Math have ads?

No, Mental Math is completely ad-free. The developers have committed to a user experience free from advertisements.

What is the age rating for Mental Math?

Mental Math has an age rating of 4+, making it suitable for young learners and adults alike who wish to practice arithmetic.

How often is Mental Math updated?

The application was last updated on July 14, 2026, with version 1.0.0. As an open-source project, updates may occur based on community contributions and developer releases.