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Calcudoku · Sudoku-like Puzzle

Calcudoku · Sudoku-like Puzzle

Fun and Addictive

1.4K ratings
174 reviews
With Ads
🎮 Games
📚 Education
🎈 Casual
🧩 Puzzle
Free
With Ads

Details

  • Released
  • Updated
  • January 17, 2017
  • March 16, 2026

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↘︎
⭐174
Reviews↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦~ in 3 months
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

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
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What users say

Summarized from real user reviews of Calcudoku · Sudoku. Based on 1.4K reviews and a 4.7/5 average, it highlights the 5 positives and 5 negatives reviewers mention most about this game.

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

1.40

March 16, 2026

Performance improvements and patches.

User reviews

Most RecentHighest RatedLowest Rated

Bogus virus alerts

App shows bogus virus alerts to sell bogus antivirus apps.
pjdubblypjdubbly

Fun puzzle

Calcudoku is challenging and fun
Wheat36Wheat36

How can I remove ads?

I found this recently and love it, except that after I do a few puzzles on my iPad, full-screen game ads come up with no way to get rid of them or to return to the puzzle! The interface is good and I love the choice of grid sizes. I would gladly pay to buy it.
lhfranklhfrank

Menu on top right does not roll down

Strange but seems not to work as well as in the past.
MPB59!MPB59!

Full screen alert

This app allowed a “browser-based scam page” today. I like this game, but had not played in some time. Yesterday the play was interrupted by a full screen alert, covering everything. Swipe up finally allowed me to exit the full screen.
2CynDid2CynDid
See 169 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.