Samurai Sudoku vs Flex Sudoku
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Samurai Sudoku
Experience a unique Sudoku challenge with five interconnected grids. Apply standard Sudoku rules to each 9x9 grid, filling numbers to ensure each row, column, and region has one of each digit. Offers multiple difficulty levels and puzzle variations.
- Five overlapping Sudoku grids
- Five difficulty levels
- Various Sudoku types (Gattai, Butterfly)
- Hint feature with conflict checking
- Highlight same numbers
- Autosave progress
- Record best completion times
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Samurai Sudoku puzzle contains five overlapping sudoku grids. The basic sudoku rules apply to each 9 x 9 grid. Basic Rule: Fill numbers in the board such that every row, column and region contains one occurrence of each number. **** Samurai Sudoku features **** # Content - 5 difficulty levels - Various types of Sudokus, including Gattai (3 overlapping sudoku grids), Butterfly (4 overlapping sudoku grids), etc. # Features - "Hint" auto fills the board with memo that has no direct conflicts with other numbers - Highlight same numbers as you select a number on board - Autosave the process of unfinished levels - Record best completion time for each level # Challenge - Game Center Achievements - Try to complete as many levels as possible If you have encountered any problem, please send an email to brightskygames@me.com
Flex Sudoku
Engage with challenging Sudoku puzzles of various sizes, from classic 9x9 to larger 16x16 and 25x25 grids. Load pre-made games, create your own, and utilize a built-in solver and note-taking features to enhance your solving experience.
- Multiple Sudoku grid sizes (4x4 to 25x25)
- Load thousands of built-in games
- Enter and solve your own games
- Adjustable difficulty levels
- Built-in Sudoku solver
- Note-taking and hint system
- Track game statistics
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Challenge yourself by playing more complex version of sudoku. You can try the classic 9x9, or more complex 16x16 or 25x25. You can even try 4x4 version for fun. Here is what you can do with the game: 1. Play classic, 16x16, 25x25 or 4x4 size sudoku game. 2. Play by loading thousands of built in games or enter your own game. 3. Choose the degree of difficulty of these games. 4. A sudoku solver is built in and can be used for solving any game you are playing. 5. Enter Notes while solving the game or using mutliple levels of hints to help you with the game. 6. Keep track of number of games played, minimum, maximum and average time to complete the game.
Screenshots
Verdict
The clearest difference is rating: Samurai Sudoku at 4.6 against Flex Sudoku's 3.1. Samurai Sudoku also leads on review sentiment (75% vs 50%) and ratings volume (383 vs 8). Flex Sudoku's advantage is in-app purchases (none vs 10) and ads (none vs shown). On price, update cadence, 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
Both are free to download. Samurai Sudoku sells 10 one-off in-app purchases. Flex Sudoku asks for nothing beyond the download.
Samurai Sudoku holds the better App Store score, 4.6 against 3.1. That said, the two scores are not equally well evidenced: Samurai Sudoku has 383 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 75% of Samurai Sudoku's written reviews are positive against 50% of Flex Sudoku's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Samurai Sudoku | Flex Sudoku |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (383 ratings) — better | 3.1 (8 ratings) |
| Positive reviews | 75.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 383 — better | 8 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.4 |
| Further details — not scored | ||
| Size | 23 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Stanley Lam | Jatinder Gogna |
Customer experience
Samurai Sudoku
Flex Sudoku
Bugs and requests
Samurai Sudoku
Reported bugs
10 issues- App crashes when watching required videos
- Weekly puzzle videos fail to load
- Game freezes mid-puzzle with no progress saved
- Purchased puzzles disappear after app updates or reinstalls
- Ad screens block gameplay with no visible close button
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- Unresponsive number input requiring multiple taps
- App locks up permanently in certain situations
- Video orientation mismatch on horizontal device orientation
- Occasional glitches requiring app restart
- Multiple solutions recognized as single correct answer
Requested features
10 requests- Auto-fill feature for candidate notes/pencil marks
- Pause button for games in progress
- Left-handed mode option
- Highlight vertical and horizontal lines for easier solving
- Ability to create and submit custom puzzles
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- Larger puzzle sizes and more complex variations
- Clue system that provides one hint at a time
- Screen lock to prevent auto-dimming during gameplay
- Bundled subscription option instead of individual pack purchases
- Auto-generate puzzles instead of hard-coded content
Flex Sudoku
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Samurai Sudoku
- Diagonal Samurai Pack$1.99
- Samurai Beginner Pack$1.99
- Samurai Median Pack$1.99
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- Samurai Advanced Pack$1.99
- Samurai Expert Pack$1.99
- Samurai Advanced Pack 2$1.99
- Samurai Basic Pack$1.99
- Jigsaw Samurai Pack$2.99
- Anti Diagonal Samurai Pack$2.99
- Samurai Sudoku$3.99
Flex Sudoku
No in-app purchases
Questions
Is Samurai Sudoku free?
Is Flex Sudoku free?
Which has better reviews, Samurai Sudoku or Flex Sudoku?
Do Samurai Sudoku or Flex Sudoku have ads?
Which is updated more often, Samurai Sudoku or Flex Sudoku?
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