Sudoku· vs Killer Sudoku +
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sudoku·
Engage your mind with a classic Sudoku puzzle game. Enjoy a clean interface and multiple difficulty levels. Track your progress and compete with others.
- Daily Challenge
- Multiple difficulty levels
- Note taking
- Hint system
- Highlight incorrect values
- Individual statistics
- Game Center leaderboard
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Pass the time while you challenge your mind with this classic Sudoku game. The clean, simple layout makes it easy to play for hours at a time. The objective is simple, fill the 9×9 grid with digits so that each column, row, and the nine 3×3 sub-grids contains all of the digits from 1 to 9. Sudoku· features: - Daily Challenge - Four levels (easy, medium, hard, and expert) - Disable numbers once all 9 instances are entered - Note taking ability - Hint (fill in missing number when you are stuck) - Highlight Incorrect Values - Auto Reveal all potential notes - Individual statistics - Game Center with Leaderboard and Achievements Download today for mind-challenging fun.
Killer Sudoku +
This app offers a challenging variant of Sudoku where you must fill a grid with numbers 1-9, ensuring each row, column, and 3x3 block has unique digits. Additionally, numbers within designated "cages" must sum to a specified value without repeating.
- Sudoku variant gameplay
- Cage sum challenges
- Unique solution puzzles
- Graded difficulty levels
- Thousands of puzzles available
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Killer Sudoku is a fun and challenging variant of Sudoku. If you love Sudoku, why not give Killer Sudoku a try? As with Sudoku, the objective of Killer Sudoku is to fill the grid with the numbers 1 to 9 such that each row, column and nonet (3x3 group of cells) contains each number only once. In addition, a Killer Sudoku grid is divided into cages, shown with dashed lines. The top-left corner of each cage shows the sum of the numbers within it. The same number cannot appear more than once in a cage. There are ten puzzles included for free, and thousands available for download. The puzzles are graded into difficulty levels, all excellent quality and with a unique solution. The app and puzzles are from the maker of https://www.dailykillersudoku.com.
Screenshots
Verdict
The clearest difference is in-app purchases: Sudoku· at none against Killer Sudoku +'s 22. Sudoku· also leads on ratings volume (17K vs 311). Killer Sudoku +'s advantage is ads (none vs shown) and review sentiment (75% vs 66%). On price, rating, update cadence and device support 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
Both are free to download. Killer Sudoku + sells 22 one-off in-app purchases. Sudoku· asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.7 for Sudoku· against 4.8 for Killer Sudoku +. That said, the two scores are not equally well evidenced: Sudoku· has 17K ratings behind it against 311, so its average is the more settled of the two. Written reviews are what separate them: 66% of Sudoku·'s written reviews are positive against 75% of Killer Sudoku +'s.
Sudoku· ships an update every 2 months, Killer Sudoku + every 3 months. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.
| Parameter | Sudoku· | Killer Sudoku + |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (17K ratings) | 4.8 (311 ratings) — better |
| Positive reviews | 65.7% of reviews | 74.6% of reviews — better |
| Number of ratings | 17K — better | 311 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13 | 12.0 — better |
| Further details — not scored | ||
| Size | 42 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Tim O's Studios, LLC | James Gibbs |
Customer experience
Sudoku·
Killer Sudoku +
User reviews
Sudoku·
From 17K App Store ratingsWhat we love
- ⭐ Excellent sudoku game
- 👍 Easy to use and understand
- 🧠 Helps exercise the brain
- 💤 Relaxing and calming
Room to improve
- 🙄 Excessive ads and interruptions
- ⏱️ Ads affect game timer
- 🔇 Cannot mute or control audio
- 🐛 Bugs and crashes
Killer Sudoku +
From 311 App Store ratingsWhat we love
- 👍 Great game/app
- 🧠 Challenging puzzles
- 💡 User-friendly interface (once used to)
- 💰 Good value for money/affordable
- 🚫 No ads
Room to improve
- 🤔 Puzzles can vary in difficulty
- 💰 Limited free puzzles
- 🐛 Some puzzles have multiple solutions
- 📱 Purchase restoration issues
- 🖱️ Uncomfortable/confusing controls
Bugs and requests
Sudoku·
Reported bugs
4 issues- Game freezes or crashes after updates
- Timer issues due to ads
- Difficulty closing ads or navigating UI
- Incompatibility with newer devices
Requested features
4 requests- Option to pay for ad-free version
- Ability to pause and restart games
- More detailed performance tracking
- Customizable color themes
Killer Sudoku +
Reported bugs
8 issues- Purchased packs disappear after factory reset/device change
- Cannot download extra games, error message
- Puzzles with multiple solutions
- App jams after purchasing puzzles
- App frozen/won't open
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- Pencil marks not working correctly
- First screen is payment portal
- App requires constant scrolling due to hidden menu
Requested features
21 requests- Colorize squares individually
- Left-handed option
- Highlight all cells with a particular number
- Highlight undone actions
- Ability to undo undone actions
Show 16 moreShow fewer
- Game statistics (completion times, hints, errors)
- Sort games by completion time
- Remember timer setting between games
- Turn off Undo including cage combinations
- Hardware keyboard entry option for external keyboards
- Android version
- Doodle option for workings/sums
- Pause button
- Highlight duplicate numbers
- Remove number from notes of influenced cells automatically
- Clear button to remove all pencil marks
- Calculator for sums
- Add numbers into multiple squares at once
- Hint feature that points to solvable square instead of solving
- Rainbow coloring for cages
- Tutorials/tips (e.g., 45 rule)
In-app purchases
Sudoku·
No in-app purchases
Killer Sudoku +
- 100 Easy Killer Sudokus #1$0.99
- 100 Moderate Killer Sudokus #1$0.99
- 100 Hard Killer Sudokus #1$0.99
Show 19 moreShow fewer
- 100 Extreme Killer Sudokus #1$0.99
- 100 Mixed Killer Sudokus #1$0.99
- 100 Easy Killer Sudokus #2$0.99
- 100 Hard Killer Sudokus #2$0.99
- 100 Mixed Killer Sudokus #2$0.99
- 100 Moderate Killer Sudokus #2$0.99
- 100 Easy Killer Sudokus #3$0.99
- 100 Moderate Killer Sudokus #3$0.99
- 100 Hard Killer Sudokus #3$0.99
- 100 Mixed Killer Sudokus #3$0.99
- 100 Extreme Killer Sudokus #2$0.99
- 100 Extreme Killer Sudokus #4$0.99
- 100 Extreme Killer Sudokus #3$0.99
- 100 Easy Killer Sudokus #4$0.99
- 500 Extreme Killer Sudokus$3.99
- 500 Easy Killer Sudokus$3.99
- 500 Hard Killer Sudokus$3.99
- 500 Moderate Killer Sudokus$3.99
- 500 Mixed Killer Sudokus$3.99
Questions
Is Sudoku· free?
Is Killer Sudoku + free?
Which has better reviews, Sudoku· or Killer Sudoku +?
Do Sudoku· or Killer Sudoku + have ads?
Which is updated more often, Sudoku· or Killer Sudoku +?
Other comparisons
