MathDoku — Number Puzzle
Daily math puzzle. Calm focus.
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
New: Grandmaster 9×9 worlds + a sharper hint engine. Start your streak today — one elegant puzzle, every day.
MathDoku turns a quiet ten minutes into the best brain workout in your day.
Inside every grid is a small, elegant arithmetic puzzle (also known as Calcudoku): fill each row and column with the numbers 1 to N without repeats, while the cells inside each outlined "cage" combine — using add, subtract, multiply, or divide — to hit its target. No guesswork. Just clean, deductive reasoning.
WHY YOU'LL LOVE MATHDOKU
• 180 hand-curated, uniquely-solvable puzzles across 6 difficulty tiers — Easy 4×4 all the way up to Grandmaster 9×9.
• A free Daily Challenge every calendar day — the same puzzle for everyone, with a streak that grows the longer you keep showing up.
• Smart hints that point to the next deductive move when you're stuck, never the answer.
• Stars, best times, and progress that unlock the next world as you sharpen up.
• Five gorgeous themes — Parchment, Midnight, Meadow, Orchid, Sunset — pick the mood, then crush the grid.
• Subtle sound and haptics that celebrate every correct placement.
• Game Center leaderboards and achievements when you want to compete.
• A shareable solve card so you can flex on the group chat.
BUILT TO LAST
• Fully offline. No accounts. No network. No ads. No interruptions.
• Color-blind palette, VoiceOver labels, Dynamic Type — accessibility built in.
• Right-to-left layout for Arabic; localized in 11 languages.
• Onboarding teaches by doing — tap a real puzzle, no walls of text.
MathDoku is the puzzle for people who love crosswords but want something more rigorous, for sudoku fans who want a sharper challenge, and for anyone who finds calm in the click of a number falling into the only place it can possibly go.
Open the app. Solve one. See the streak begin.
Ratings & Reviews
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The developer, l0g1c.us, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Justin Pruskowski
- Size
- 4.3 MB
- Category
- Puzzle
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 10 more
- English, Arabic, French, German, Hindi, Japanese, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Brainrash
