Digitsmith: Calcudoku & Kakuro

Contains adsIn-app purchases
Content rating
Everyone
1+
Downloads
Content rating
Everyone
In-Game Purchases
Learn more
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About this game

Digitsmith puts two classic number puzzles in one calm app: Calcudoku (also called Mathdoku) and Kakuro (cross sums).

Every board is pure logic with exactly one solution. No guessing and no luck. If you get stuck, a helper shows what still fits and hints explain the next step.

Calcudoku: a math puzzle in cages
• Fill the grid so each row and column has every digit once
• Each cage's digits must make its clue with +, −, × or ÷
• From a gentle 4×4 to 9×9, Easy to Expert
• Expert boards hide the operation: the clue shows only the number

Kakuro: a crossword made of numbers
• Each run of white squares adds up to its clue, with no digit repeated
• From 6×6 up to giant 20×20 boards

A smart cage helper
• Tap a cage or run to see every combination that still fits
• Combinations that no longer fit are crossed out as you play
• "Only way!" tells you when just one combination is left

Hints that explain the logic
• Each hint points to the next logical step and says why it works
• "Show me" highlights the squares involved
• The Technique Book keeps every trick you have learned

A daily puzzle, twice a day
• A new daily Calcudoku and daily Kakuro every day, easy on Monday and harder by Sunday
• Keep a streak going; streak freezes cover the odd day you miss
• Pure mode for purists: no helper, hints or checks
• Share your result without spoiling the board

More brain games inside
• Killer Sudoku, Futoshiki and Zero Calcudoku
• Endless mode for when you want just one more
• 30+ achievements, stats and best times

Made for comfortable play
• Large text sizes and a high-contrast mode
• Light and dark themes, a 3×3 or single-row number pad, left-handed layout
• TalkBack reads every square: row, column, cage and notes
• Plays offline, small download, and your progress stays on your phone

Free to play
Digitsmith is free with ads. You get free hints and checks every day, and can watch a short video for more. Ads never appear in the middle of a puzzle.

Optional one-time purchases:
• Remove Ads
• Expert Pack: 9×9 and hidden-operation Calcudoku, 12×12 and giant Kakuro, and every past daily

No subscriptions. Made by one developer who loves number puzzles.
Calcudoku & Kakuro number puzzles with a smart cage helper and daily puzzles.
Updated on
Oct 5, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Location, App activity and 2 others
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

First release of Digitsmith: Calcudoku and Kakuro with a cage helper, explaining hints and two daily puzzles.
Content rating
Everyone
In-Game Purchases
Learn more

App support

Phone number
+923009878282
About the developer
SHAHZAD ASLAM
shezz77.se@gmail.com
419/114 block b beheria orchard lahore Lahore, 54780 Pakistan

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