Count Doku: Mental Math Games
Number Puzzle & Brain Training
Only for iPhone
Free · In‑App Purchases · Designed for iPhone
iPhone
Reach the target number. That's it — that's the game. Getting there is where your brain comes in.
Count Doku hands you a set of numbers and four operations (+, −, ×, ÷). Combine them cleverly to hit the target. It takes seconds to learn, yet every puzzle makes you think — and just five minutes a day keeps your mental math sharp.
THE DAILY CHALLENGE
One puzzle. One day. Everyone plays the same board.
- Solve it to build your streak
- Share your result and challenge friends to beat it
- Come back tomorrow for a fresh puzzle
WHY COUNT DOKU WORKS
Flashcard drills are boring — so nobody sticks with them. Count Doku turns practice into play: instead of memorizing answers, you use numbers creatively to reach a goal. That builds real problem-solving skill and number sense, not just memorization.
TRAIN ALL FOUR OPERATIONS
Addition, subtraction, multiplication, and division. Every puzzle mixes them, so your arithmetic stays balanced and quick.
STUCK? GET A NUDGE
A gentle glow highlights the next two tiles to combine — a hint that points the way without spoiling the solve.
RISING CHALLENGE
Progress through level after level as the difficulty adapts to you. There is always a next puzzle waiting.
DESIGNED TO BE CALM
Clean, minimalist design. Vibrant colors, zero clutter, no pressure — just you and the numbers.
PERFECT FOR
- Adults who want a quick daily brain workout
- Students sharpening mental arithmetic
- Fans of sudoku, crosswords, and logic puzzles
- Anyone who wants to feel faster with numbers
FEATURES
- The Daily Challenge, with streaks and shareable results
- A deep library of levels that grows with your skill
- Hints and Nudges for when you're stuck
- Game Center leaderboards
- Sessions under five minutes
- Free to play
Make math the best five minutes of your day — download Count Doku and play today's puzzle.
Ratings & Reviews
Little bug fixes!
The developer, Digiruu, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Digiruu Ltd
- Size
- 39.6 MB
- Category
- Puzzle
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Get 5 Hints and Remove Ads $1.99
- Vault of Coins $9.99
- Chest of Coins $5.99
- Pouch of Coins $2.99
- Pocket of Coins $0.99
- Get 15 Hints $1.99
- Get 5 Hints $0.99
- Get 40 Hints $4.99
- Copyright
- © Digiruu Ltd
