Master 3,000+ variant sudoku and 450+ classic grids — smart step-by-step hints, daily challenges, cloud sync, no ads. Killer, Kropki, Thermo and more.
No ads. No guessing. Just pure-logic variant sudoku.
VariantDoku is built for solvers who want more than one daily grid — a growing library of 3,000+ variant and zero-givens puzzles, every one verified to have a single solution reachable by logic alone. No ads, ever — free or paid.
WHY SOLVERS STAY
- 3,000+ variant & zero-givens puzzles: killer cages, thermos, kropki dots, XV, arrows, renban, German whispers, palindromes, diagonals, anti-knight, and more
- Every puzzle is logic-checked: one unique solution, no guessing required
- A new daily puzzle, free for everyone — compare solve times on the daily leaderboard
- Home-screen widget keeps today's puzzle one tap away
- Audio narration reads the rules and tutorial steps aloud — listen while you study the grid
LEARN ANY VARIANT
- Step-by-step interactive tutorials for every variant, from your first 4x4 grid to mixed-constraint puzzles
- A guided first-launch experience matches puzzles to your level — you're never thrown into the deep end
- Already sharp? Skip straight to the expert grids
TOOLS THAT RESPECT YOUR SOLVE
- Candidate notes, corner marks, colors, and symbols for advanced solving
- Error checking and gentle hints — only when you ask
- Import puzzle links straight into your Library
- Search and filters by difficulty, grid size, and constraint type
- Streaks and solve history to track your progress
- Dark mode and a calm interface designed for long sessions
- Fully optimized for iPad in portrait and landscape, and runs on Mac
BUILT TO BE ACCESSIBLE
- VoiceOver plays the whole board: move cell by cell and hear the digit, your pencil marks, the clues on that cell and how it connects to its neighbours
- Colour-blind support: German Whispers, Renban, Palindrome, Region Sum and Parity lines each have their own dash pattern, so no rule depends on colour alone
- Reduce Motion is respected — staged hint reveals and animations settle immediately
HINTS THAT COACH, NOT ANSWER
- Every hint names the next logical step — Hidden Single, X-Wing, W-Wing, Simple Coloring, Forcing Chain — and highlights the cells it depends on
- It reads the pencil marks you already made and builds on them
- It never reveals a digit that isn't logically deduced; when the logic only rules candidates out, it shows you that instead of handing you a number
THE VARIANTS LIST
Classic Sudoku, Killer Sudoku, Kropki, XV, Thermo, German Whispers, Renban, Palindrome, Between Lines, Lockout Lines, Region Sum Lines, Arrow Sudoku, Diagonal (Sudoku X), Anti-Knight, Anti-King — plus multi-constraint puzzles that combine several on one board, and zero-givens puzzles solved entirely from the variant rules.
Variant+ removes the hint limit and explains the available logical deductions step by step, and adds unlimited puzzles, unlimited error checking and offline Library play. The app stays 100% ad-free — free or paid.
Whether you're learning your first killer cage or chasing your hundredth zero-givens solve, VariantDoku is a calm place to practice and improve.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Was tired of regular sudoku and found this Variant puzzle. It’s a cool app to focus and detach. You have to solve it by the book, but the app gives you ZERO inputs to work with. It’s so satisfying once you get the hang of the mechanics, and moving up from 4x4 boards to 6x6 and higher just makes it way more addictive and engaging
Developer Response
Thank you for the thoughtful review! I’m glad the variant puzzles gave you a fresh challenge and that progressing from 4×4 to larger boards feels so rewarding. Happy solving!
Great puzzle game
HMontesque
No ads. Tricky but solvable puzzles. Exactly what I was looking for.
Developer Response
Thank you! I'm glad you’re enjoying the challenging but solvable puzzles - and the ad-free experience!
Interested
Yuraneud
I’m very like it
Developer Response
Thank you! I’m very glad you like the app!
• Mac: support for macOS 27
Version 1.3.11
The developer, Uladzislau Artsemyeu, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
User Content
Search History
Usage Data
Diagnostics
Other Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Larger Text
Dark Interface
Differentiate Without Color Alone
Sufficient Contrast
Reduced Motion
Information
Seller
Uladzislau Artsemyeu
Size
15.1 MB
Category
Puzzle
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
