Explore a vast collection of Sudoku puzzles with over 40 unique variants and more than 20,000 levels. Enjoy challenges ranging from standard grids to massive 21x21 puzzles, catering to all Sudoku enthusiasts.
4.7(21 ratings)
FreeIn-App Purchases
Best games like Number Join - Connect Diagonal
10+ similar games compared and reviewed
4.8 avg rating
10 free games
Updated August 2026
Number Join is great, but it's not the only option. Explore 10+ similar apps and games for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.
Top Alternatives to Number Join
4.8😊(798 ratings)
FreeIn-App Purchases
This app offers a logic puzzle experience combining Sudoku and Kakuro elements. Solve grids by filling numbers 1-9, ensuring each appears once per row, column, and box, while also meeting area sum clues. Features include hints, pencilmarks, and progress previews.
What We Love
- 👍 Challenging and fun puzzles
- 🚀 Intuitive interface and controls
- 🔒 No ads or in-app purchases
- 💡 Variety of difficulty levels
Room to Improve
- 🐛 Occasional crashes or freezes
- 💡 Difficulty levels not always consistent
- 💡 Lack of customization options (colors, etc.)
4.8😊(1.9K ratings)
FreeIn-App Purchases
Fill empty squares with numbers 1-9 so that each block sums to the clue on its left or top. No number can be repeated within a block. This logic puzzle offers endless fun and sharpens cognitive skills.
What We Love
- 👍 Easy to use
- 🚀 Smooth gameplay
- 🔒 No ads
- 💡 Variety of difficulty levels
Room to Improve
- 🐛 Some puzzles have multiple valid solutions
- 💡 Wish for more advanced solving techniques
- 💡 Ability to highlight/add pencil marks to multiple cells at once
More games like Number Join
4
Tic-Tac-Logic: X or O?
Solitaire Tic Tac Toe puzzles
Free
This logic puzzle game challenges you to fill a grid with X's and O's based on specific rules. It offers a solitary, mentally stimulating experience with various difficulty levels and grid sizes. Enjoy endless fun and sharpen your logic skills with these unique puzzles.
Fill grid with X's and O'sNo more than two adjacent X's or O'sEqual X's and O's per row/column
🎮 Games
(520)
free with in-app purchases5
Real Kakuro™
3000 Cross Sum Puzzles!
Free
This number puzzle game challenges you to solve crosswords using digits. Each number combination must equal a given clue, using digits 1-9 only once per word. With thousands of unique, logic-based puzzles, it offers hours of engaging gameplay without locked levels.
3000 unique puzzlesLogic-based solvingNo locked levels
🎮 Games
(2.6K)
free with in-app purchases6
Nurikabe: Islands & Walls
Island logic puzzles
Free
Solve logic puzzles by partitioning a grid with walls to create islands of specific sizes. Each island must contain a clue and be isolated from others. Offers a variety of difficulty levels and features to aid gameplay.
Partition grid with wallsCreate islands of specific sizesMultiple difficulty levels
🎮 Games
(396)
free with in-app purchases7
Kakuro++ Cross Sums Puzzles
Logic Puzzle Game with Numbers
Free
This logic puzzle game challenges you to fill a grid with numbers, similar to a crossword. It offers over 3800 puzzles with varying difficulty levels and unique solutions, designed to test your addition and logical reasoning skills.
Over 3800 Kakuro puzzles15 game levelsPuzzles for beginners
🎮 Games
(603)
free with in-app purchases8
Calcudoku · Sudoku-like Puzzle
Fun and Addictive
Free
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 puzzlesLogic and math challengesShape product calculations
🎮 Games
(1.4K)
ad-supported9
100 Logic Games - Time Killers
Time Killers Puzzle Pack !
Free
Engage your mind with over 100 unique puzzle games, offering a fresh alternative to traditional logic challenges. With thousands of levels, save progress, hints, and note-taking features, it's perfect for keeping your brain sharp during downtime.
100+ unique puzzle typesThousands of levelsSave game progress
🎮 Games
(693)
free with in-app purchases10
Sudoku: Classic & Variations
No ads. More fun.
Free
Engage your mind with a variety of Sudoku puzzles, including classic and unique variations like Diagonal, Irregular, and OddEven. Offers a no-ads experience with features to aid gameplay and track progress. Perfect for logic puzzle enthusiasts seeking a mental challenge.
Six Sudoku variationsNo adsWeekly bonus puzzles
🎮 Games
(1.1K)
free with in-app purchases