Comparison

Logic King vs Calcudoku

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Logic King

Features
Read full description

Crown the King by solving 200 logic puzzles on a chessboard. In Logic King, every piece hides a number. Find out what the knight is worth, balance the scales, complete pyramids, spot the pattern in each sequence and move square by square along the King's Path, from the Pawn to the King… and then the Black Side. • 200 levels, from very easy to real brain teasers • 10 categories: five white pieces and five black ones • Sequences, piece equations, scales, pyramids, magic squares and more • Step-by-step hints and solutions when you get stuck • No timers, no rush: play at your own pace • In English, Spanish, French, German and Italian Free to play in full. A single purchase removes ads forever. Key Features: - Engaging Puzzles: Hundreds of levels with increasing difficulty. - Mathematical Challenges: Exercise addition, subtraction, logic, and number patterns. - Brain Training: Boost memory, concentration, and problem-solving skills. - Unlock All Levels: Progress through the game and unlock every level to prove your mastery. - Casual & Fun: Play anytime, anywhere, perfect for short or long sessions. - Think Outside the Box: Solve puzzles creatively to conquer each challenge. - Become the King: Reach the top and show your logic skills to the world! Whether you want to exercise your brain, improve your math skills, or just enjoy addictive puzzles, Logic King is your go-to game for fun and mental training.

About

Calcudoku

This logic puzzle game offers a unique approach to learning how to solve number grids. Instead of simply revealing answers, it provides intelligent, step-by-step guidance on logical strategies and note-taking to help you master the puzzles.

Highlights
  • Intelligent step-by-step explanations
  • Optional auto notes for cages
  • Intuitive note-taking interface
  • Variety of arithmetic operations
  • Grids for all skill levels
  • Offline-first architecture
  • Dark mode support
Features
Read full description

If you love Sudoku but are looking for a deeper challenge, or if you simply enjoy games that give your brain a real workout, Calcudoku is the ultimate logic puzzle. It combines the grid-filling deduction of Sudoku with simple arithmetic, creating a deeply satisfying balance of mental math, strategy, and problem-solving. Whether you want to sharpen your focus, keep your mind agile during a quick break, or master complex logical deduction, Calcudoku offers endless replayability for beginners and puzzle veterans alike. --- WHAT IS CALCUDOKU? --- Also known as Mathdoku or KenKen®, Calcudoku challenges you to solve a grid using logic and arithmetic: • Grid: Fill an N x N grid so that every row and column contains the numbers 1 through N exactly once without repeating. You choose the grid size to solve, anywhere from a 3x3 to a 9x9. • Cages: Outlined groups of cells (cages) each display a target number and an arithmetic operator. • Math: The numbers in each cage must combine using its operator (+, −, ×, ÷) to hit the target. Numbers can repeat within a cage as long as they stay in different rows and columns. It’s the ultimate combination of mental math, pattern recognition, and pure deduction. --- THE SMART DIFFERENTIATOR --- Many puzzle apps ruin the fun when you get stuck by simply filling in a random cell for you when requesting help. Our app takes a different approach: it teaches you how to solve it. If you hit a wall, our built-in helper analyzes your exact grid state and explains the logical next step. The engine guides you through genuine deduction strategies—showing you how to cross-reference overlapping cages, prune cell candidates, and leverage your notes so you can solve the grid completely on your own. --- KEY GAME FEATURES --- • Intelligent Explanations: Step-by-step guidance focused on note-taking, elimination strategies, and candidate pruning rather than giving away answers. • Optional Auto-Notes: The settings tab provides the option to jump into a puzzle with the initial candidate notes based on cage arithmetic. Skip the mundane and get right to the logic! • Smooth Input: Rapidly input answers and edit candidate notes with an intuitive, fluid UI built for mobile screens. • Complete Arithmetic Variety: Play grids featuring addition, subtraction, multiplication, and division. • All Skill Levels: Progress from quick 3x3 warmups to grueling 9x9 logic grids. • Polished Interface: Full native dark mode support, crisp typography, and seamless offline play - no Wi-Fi required. Master the grid, elevate your deduction skills, and train your brain with a game that actually makes you a better solver.

Screenshots

Logic King4 screens
Calcudoku4 screens

Verdict

The call

The clearest difference is in-app purchases: Calcudoku at none against Logic King's 1. Logic King's advantage is update cadence (every 10 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Logic King sells 1 one-off in-app purchase. Calcudoku asks for nothing beyond the download.

UpkeepUpdate frequency

Logic King ships an update every 10 days, Calcudoku every 3 weeks. Both last shipped on October 25, 2026.

Scorecard2 real differences · 7 level
Logic King versus Calcudoku: the parameters behind the verdict, then further details
ParameterLogic KingCalcudoku
PriceFreeFree
Rating—5.0 (4 ratings) — better
Number of ratings—4 — better
Update frequencyEvery 10 days — betterEvery 3 weeks
AdsYesYes
In-app purchasesYesNo — better
Monetization—Ad-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size85 MB104 MB
Age rating4+4+
DeveloperNetdomuzLogicSmith

In-app purchases

1 purchases

Logic King

One-time1
  • Premium$0.99
None

Calcudoku

No in-app purchases

Questions

Is Logic King free?
Logic King is free to download, with in-app purchases available.
Is Calcudoku free?
Calcudoku is free to download, with no in-app purchases.
Do Logic King or Calcudoku have ads?
Both Logic King and Calcudoku show ads.
Which is updated more often, Logic King or Calcudoku?
Logic King ships an update every 10 days, and Calcudoku every 3 weeks. Most recently, Logic King was updated on October 25, 2026 and Calcudoku on October 25, 2026.

Other comparisons