Comparison

Sudoku Riddles vs Sudoku BrainTrain

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

Head to head
About

Sudoku Riddles

Enjoy a pure, classic Sudoku experience without distractions. This game offers multiple difficulty levels from easy to very hard, with a clean, intuitive interface designed for focused gameplay. It's completely free, with no ads, subscriptions, or tracking.

Highlights
  • Classic 9x9 Sudoku grid
  • Multiple difficulty levels (Easy, Medium, Hard, Very Hard)
  • Clean and intuitive interface
  • Distraction-free gameplay
  • No ads, subscriptions, or tracking
Features
Read full description

Love Sudoku? Get back to the basics with Sudoku Riddles. Tired of apps that slow you down with ads, nag you for subscriptions, or sneakily track your every move? We are too. Sudoku Riddles is a simple, beautiful, and absolutely free Sudoku experience built for players who just want to play. Straightforward Sudoku Action We stripped away the clutter so you can focus on the puzzle. Enjoy the timeless logic and satisfying challenge of the classic 9×9 grid with an interface that's clean, intuitive, and distraction-free. Master Every Difficulty Whether you're a beginner learning the ropes or a seasoned pro looking for a brain-buster, we've got a challenge for you: Easy: Perfect for a relaxed break or getting started. Medium: A solid test of logic and pattern recognition. Hard: Requires serious deduction and careful planning. Very Hard: Only for the Sudoku masters. Prepare to be challenged! The 100% Commitment: No Catches, No Clutter - No Subscriptions - No Fees - No Ads - No Tracking This is Sudoku, pure and simple, just the way it should be. Download now and start playing instantly. Get Sudoku Riddles and enjoy the classic game, completely uninterrupted.

About

Sudoku BrainTrain

Features
Read full description

Sudoku BrainTrain delivers a premium Sudoku experience with a clean, distraction-free design. Whether you're picking up Sudoku for the first time or you're a seasoned solver, Sudoku BrainTrain has the right challenge for you. Every puzzle is uniquely generated with a guaranteed single solution, so you'll never see the same board twice. Choose from four difficulty levels — Easy, Medium, Hard, and Expert — and work your way up as your skills improve. SMART FEATURES THAT HELP YOU SOLVE Pencil Marks — Toggle notes mode to jot down candidate numbers in any cell. Notes are displayed in an intuitive 3x3 mini-grid layout, and they're automatically cleared when you place a confirmed number in a related cell. Intelligent Hints — Stuck on a tough cell? Use one of your three hints per game. Hints prioritize your currently selected cell, giving you exactly the help you need without solving the whole puzzle for you. Conflict Detection — Mistakes are highlighted in real time. If a number conflicts with another in the same row, column, or 3x3 box, you'll see it immediately. Undo Support — Made an error? Undo your moves one step at a time to get back on track. PLAY ON YOUR SCHEDULE Save & Resume — Pause any game and pick up right where you left off, even after closing the app. Your progress is automatically saved when you leave. Unlimited Saved Games — Juggle as many puzzles as you like. Browse your saved games, see your progress at a glance, and resume or delete any game with a tap. Completed Games History — Track every puzzle you've finished with a record of the difficulty and your completion time. DESIGNED FOR FOCUS Clean Interface — A minimal, modern design that puts the puzzle front and center. No ads, no clutter. Dark Mode Support — Switch between Light, Dark, or System theme to match your preference and reduce eye strain during late-night solving sessions. Timer — Track how long each puzzle takes and challenge yourself to beat your best times. Four difficulty levels to master: Easy — Great for beginners Medium — A balanced challenge Hard — Test your skills Expert — Only for the fearless Download Sudoku BrainTrain and start solving today.

Screenshots

Sudoku Riddles3 screens
Sudoku BrainTrain4 screens

Verdict

The call

Sudoku Riddles and Sudoku BrainTrain are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

ScorecardNo meaningful differences
Sudoku Riddles versus Sudoku BrainTrain: the parameters behind the verdict, then further details
ParameterSudoku RiddlesSudoku BrainTrain
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better18.2
Further details — not scored
Size8 MB10 MB
Age rating4+4+
DeveloperRalph SchnalzenbergerCurayt, LLC

In-app purchases

None

Sudoku Riddles

No in-app purchases

None

Sudoku BrainTrain

No in-app purchases

Questions

Is Sudoku Riddles free?
Sudoku Riddles is free to download, with no in-app purchases.
Is Sudoku BrainTrain free?
Sudoku BrainTrain is free to download, with no in-app purchases.
Do Sudoku Riddles or Sudoku BrainTrain have ads?
Neither Sudoku Riddles nor Sudoku BrainTrain shows ads.
Which is updated more often, Sudoku Riddles or Sudoku BrainTrain?
Sudoku Riddles ships an update every 3 weeks, and Sudoku BrainTrain every 3 weeks. Most recently, Sudoku Riddles was updated on October 30, 2026 and Sudoku BrainTrain on October 31, 2026.

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