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Calcudoku · Sudoku-like Puzzle

Calcudoku · Sudoku-like Puzzle

Math Logic Puzzles

1.5K ratings
221 reviews
With Ads
🎮 Games
📚 Education
🎈 Casual
🧩 Puzzle
Free
With Ads

Details

Released
January 17, 2017
Updated
September 29, 2026

Features

Developer

Matthew Murphy
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Calcudoku · Sudoku-like Puzzle screenshot #1 for iPhone
Calcudoku · Sudoku-like Puzzle screenshot #2 for iPhone
Calcudoku · Sudoku-like Puzzle screenshot #3 for iPhone
Calcudoku · Sudoku-like Puzzle screenshot #4 for iPhone
Calcudoku · Sudoku-like Puzzle screenshot #5 for iPhone
iphone
ipad
📌Ready
Reviews summary↘︎
⭐221
Reviews↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦~ in 4 months
Updates frequency↘︎
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About

This number puzzle game challenges your math and logic skills with a Sudoku-like grid. Solve unique puzzles by filling cells so digits don't repeat in rows or columns, using shape products as your guide. Offers hints, checks, and a calculator for assistance.

✓Sudoku-like number puzzles
✓Logic and math challenges
✓Shape product calculations
✓Unlimited hints and checks
✓Calculator tool
✓Automatic game saving
✓Solve time statistics
Show original description

What users say about Calcudoku · Sudoku

Reviews of Calcudoku · Sudoku are mostly positive: the game is rated 4.7/5 from 1.5K App Store ratings. What users like most: challenging and engaging puzzles, tracks progress and stats. Top complaints: loud and intrusive ads, confusing pencil mode/number entry controls. Summarized from real user reviews.

Positive things

  • 🤓Challenging and engaging puzzles
  • 📈Tracks progress and stats
  • 🧠Exercises the brain
  • 🎨Simple and clean design
  • 🕰️Variety of puzzle sizes and difficulties

Negative things

  • 🔊Loud and intrusive ads
  • 🤯Confusing pencil mode/number entry controls
  • 🤖Automatic note erasure issues
  • 🔍Small text and UI elements on larger puzzles
  • 🤔Lack of customization options (difficulty, operations)
See all reviews

What's New in Calcudoku · Sudoku

1.41

September 29, 2026

Split screen and iPhone Duo support! Additional performance improvements and patches.

User reviews

Most RecentHighest RatedLowest Rated

うーん

この手のゲームだと同じセルの中には同じ数字は入らないようなルールのはずだけど、同じ数字2回使ってもいいとかなってるから、わかりづらいです。そうなると拉致があかないのでやめました。
花花子がねぇ

Programming error

This is a good game, but sometimes the 4x4 puzzles have more than one solution.
VViejo44

for people that struggle with math 🩷

I struggle with math and my aunt is a math teacher and she was playing this game showing one of her students the game. I ask what game are y’all playing she said Calcudoku I said oh . So I downloaded it , it is fun and helpful and I got better grades in my class after playing this game please download game if u struggle with math !!!!!!!! 🩷🩷🩷🩷🩷👌👌
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BEBrooklyn Edward’s

No option to pay to remove ads

Great game, let me pay to remove ads
GGamer12839262

Bogus virus alerts

App shows bogus virus alerts to sell bogus antivirus apps.
Ppjdubbly
See 216 more reviews

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User experience

🐞

Reported Bugs

4 issues

App crashes when using hint button

Bug

Incorrect math calculations in some puzzles

Bug

Blank screen issues after completing puzzles

Bug

Inconsistent recording of best times

Bug
✨

Requested Features

5 requests

Add undo/redo functionality

Feature

Provide option to disable ads or pay for ad-free version

Feature

Allow customization of puzzle difficulty and operation types

Feature

Improve visibility and clarity of pencil mode indicator

Feature

Optimize UI for larger screens and older devices

Feature

FAQ

What is Calcudoku?

Calcudoku is a fun number puzzle game that combines math and logic. It's a Sudoku-like puzzle where you fill a grid with digits, ensuring no repeats in rows or columns, while also using the product of digits within defined shapes to solve the puzzle.

How do I play Calcudoku?

You fill in the grid cells with numbers. The rules are similar to Sudoku: no digit can repeat in any row or column. Additionally, each outlined cage (shape) has a target number that is the product of the digits within that cage. The numbers within a cage can repeat.

Is Calcudoku free to play?

The application is free to play. However, it does contain advertisements. There are no in-app purchases mentioned for removing ads or unlocking content.

What devices can I play Calcudoku on?

You can play Calcudoku on your phone and tablet. The game supports both online and offline modes, allowing you to enjoy the puzzles wherever you are.

What features help me solve the puzzles?

Calcudoku offers unlimited hints and checks to assist you if you get stuck. It also includes a calculator tool to help with multiplication and division, especially for larger numbers, and automatically saves your progress.