# Count Doku: Mental Math Games — Number Puzzle & Brain Training

> Mental arithmetic game for practicing math skills creatively and efficiently. (iPhone/iPad app by Digiruu.)

- Source: https://appshunter.io/ios/app/count-doku-mental-math-games/id6474322246 (this page in markdown: same URL + `.md`)
- Developer: [Digiruu](https://appshunter.io/developer/1549213591)
- Category: Games, Education, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 38 MB
- Languages: American English
- Released: 2024-01-31
- Data updated: 2026-09-03
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/count-doku-mental-math-games/id6474322246/reviews.md

## What is Count Doku?

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.

## Key features

- Mental math practice
- Addition, subtraction, multiplication, division
- Creative problem-solving
- Short daily sessions
- Unlimited levels
- Minimalist design

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pocket of Coins | $0.99 | one-time |
| Pouch of Coins | $2.99 | one-time |
| Chest of Coins | $5.99 | one-time |
| Vault of Coins | $9.99 | one-time |
| Get 40 Hints | $4.99 | one-time |
| Get 5 Hints | $0.99 | one-time |
| Get 15 Hints | $1.99 | one-time |
| Get 5 Hints and Remove Ads | $1.99 | one-time |


## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/count-doku-mental-math-games/id6474322246/reviews.md

### 2/5 — This game is badly made

*2024-12-20*

Like I wish I can show you the impossible puzzle the made me do. Level 1 you have the number 2 and 4 and the options are +, - , and 
 Division how am I supposed to make 6? Like is there an option to change the - + and the other or is it just broken idk tbh.

**Developer response:** Hey! If you do 2+4, that equals 6. Using "Hints" can help you if you get stuck. Thank you for playing!

### 3/5 — Broken level? Good game though

*2024-10-09*

Pretty sure level 24 doesn’t work.

**Developer response:** Woah you got to Level 24?! Thank you so much for the review and apologies for the late reply. We'll take a look into it. Send us an email at info@digiruu.com if you can to let us know what issues you're facing specifically. Would really help us. Thank you!

### 5/5 — Numbers

*2024-08-11*

Brilliant 🤩

**Developer response:** Thank you so much!

### 5/5 — Like Countdown but on your phone!

*2024-03-21*

Been playing this all morning in my spare time, excellent user interface and a very enjoyable game!

**Developer response:** Thank you so much for the kind review!

## Frequently asked questions about Count Doku

### What math skills does Count Doku help with?

Count Doku helps users practice fundamental math skills including addition, subtraction, multiplication, and division. It focuses on mental arithmetic to improve quick calculation abilities.

### How long does a typical Count Doku practice session take?

Count Doku is designed for quick practice sessions, with users encouraged to spend less than 5 minutes a day. This makes it easy to fit into a busy schedule.

### Does Count Doku have ads?

Yes, Count Doku contains advertisements. These ads are integrated into the free experience to support the app's development and maintenance.

### What makes Count Doku different from other math practice apps?

Count Doku encourages users to use numbers creatively to reach target numbers, going beyond traditional exercises. This approach aims to enhance problem-solving skills and foster a deeper understanding of mathematical relationships.

### Is Count Doku suitable for all ages?

Count Doku has an age rating of 4+, making it suitable for a wide range of users, from those just learning math to adults looking to stay sharp. Its simple design and adaptive difficulty cater to various skill levels.

### Can I play Count Doku offline?

The provided data does not specify whether Count Doku can be played offline. However, many puzzle and practice games offer offline functionality.

### How often is Count Doku updated?

Count Doku was last updated on January 2, 2025, with version 1.0.9. This indicates a relatively recent update, suggesting ongoing development and support.

### What devices can I play Count Doku on?

Count Doku is available on iPhone and iPod devices. The app is designed to run on Apple's mobile operating systems.

## Version history (last 5 releases)

### 1.1.3 — 2026-09-02

Bug fix that was causing the app to crash for some users

### 1.1.2 — 2026-08-24

Little bug fixes!

### 1.1.1 — 2026-08-11

Our biggest update yet!

- NEW: The Daily Challenge. One shared puzzle every day — solve it, build your streak, and share your result for friends to beat.
- NEW: Nudge. Stuck mid-puzzle? A gentle glow shows you the next two tiles to combine.
- A fresh coat of paint: smoother, more consistent design throughout.
- Bug fixes, including a crash when dividing by zero. (Not on our watch.)

Happy counting!

### 1.1.0 — 2026-08-11

We've made some exciting upgrades to Count Doku!

### 1.0.9 — 2025-01-02

Bug fix where the + was missing!

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## More apps by Digiruu

- [Navora - Manifestation Journal](https://appshunter.io/ios/app/navora-manifestation-journal/id6790354147)

All apps by Digiruu: https://appshunter.io/developer/1549213591

## Related topics

[easy math practice](https://appshunter.io/ios/topics/easy-math-practice)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*