Blockmath: Sum Logic Puzzle

Contains adsIn-app purchases
Content rating
Everyone
10+
Downloads
Content rating
Everyone
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About this game

Blockmath is a calm number logic puzzle in the spirit of kakuro.

Every board is a small grid with a target sum beside each row and column. Your pieces carry digits. Drag them onto the grid, rotate them to fit, and make every row and column add up exactly. Some cells are already filled for you; the rest is pure deduction.

It looks simple. It isn't always. A piece can fit the space perfectly and still break a sum, so the puzzle is in the reasoning, not the reflexes. There are no timers on the campaign.

600 LEVELS
• 12 chapters of 50 levels, plus a short tutorial that teaches the rules by playing
• A gentle start, then traps that reward careful thinking
• Earn up to three stars on every level

DAILY CHALLENGE
• A new puzzle every day, the same for every player
• Build a streak and earn coin rewards at milestones
• Missed a day? Play past puzzles from the calendar

MADE TO BE RELAXING
• An original, calm lo-fi soundtrack written for the game
• Clean, paper-and-ink look with smooth, quiet animations
• Light and dark mode
• Hints and undo when you are stuck

THEMES
• Unlock Sunset, Playful and Mono with the stars you earn
• Premium themes Candy and Toy blocks, each with its own tiles and animations

FAIR TO PLAY
• Every level can be played for free
• Optional rewarded ads give you extra hints
• One purchase removes the ads between levels

If you enjoy kakuro, sudoku or nonograms, or simply like a good number puzzle with your tea, Blockmath is for you.

Made by Tiny Proof Studio.
Kakuro-style number puzzle: place digit pieces so every row and column adds up!
Updated on
Oct 28, 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.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, Financial info and 3 others
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

Welcome to Blockmath!
600 sum-logic puzzles, a Daily Challenge, and a calm original soundtrack.
Content rating
Everyone
Learn more

App support

About the developer
OMKAR SAWANT
support@tinyproofstudio.com
Laxmi Nagar, Eastern Express Highway 2301, Sheth Avalon, G wing Thane, Maharashtra 400601 India