Comparison

Sudoku vs TURN.

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

Head to head
About

Sudoku

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.

Highlights
  • Six Sudoku variations
  • No ads
  • Weekly bonus puzzles
  • Multiple difficulty levels
  • Graphic puzzle previews
  • Unlimited hints and undo
  • Dark Mode support
Features
Read full description

Play six different Sudoku variations in a single app! Start with classic Sudoku grids and advance to Diagonal Sudoku, Irregular Sudoku and OddEven Sudoku - each with a different look and a unique twist of brain challenging logic. Huge brain-bashing Mega Sudoku puzzles, also known as Monster Sudoku, are offered for iPad only. With its diverse variations and straightforward no-frills game design, Conceptis Sudoku brings a new dimension to Sudoku mobile gaming - on both iPad and iPhone. To help see the puzzle progress, graphic previews in the puzzle list show the progress of all puzzles in a volume as they are being solved. A Gallery view option provides these previews in a larger format. For more fun, Sudoku contains no ads and includes a Weekly Bonus section providing an extra free puzzle each week. PUZZLE FEATURES • 160 free Classic Sudoku and Sudoku variant puzzles • Variants include Mini, Diagonal, Irregular, OddEven and Mega • Extra bonus puzzle published free each week • Multiple difficulty levels from very easy to extremely hard • Grid sizes up to 16x16 • Puzzle library continuously updates with new content • Manually selected, top quality puzzles • Unique solution for each puzzle • Hours of intellectual challenge and fun • Sharpens logic and improves cognitive skills GAMING FEATURES • No ads • Unlimited check puzzle • Unlimited hints • Show conflicts during gameplay • Unlimited Undo and Redo • Pencilmarks feature for solving hard puzzles • Autofill pencilmarks mode • Highlight Excluded Squares option • Lock number on keypad option • Concurrently playing and saving multiple puzzles • Puzzle filtering, sorting and archiving options • Dark Mode support • Graphic previews showing puzzles progress as they are being solved • Portrait and landscape screen support (iPad only) • Track puzzle solving times • Backup & restore puzzle progress to iCloud ABOUT Conceptis Sudoku variations have also become popular under other names such as Sudoku by Dave Green, Sudoku 12x12, Sudoku 16x16, Jigsaw Sudoku, Nonomino Sudoku, Squiggly Sudoku, Sudoku X and many more. All puzzles in this app are produced by Conceptis Ltd. - the leading supplier of logic puzzles to printed and electronic gaming media all over the world. On average, more than 20 million Conceptis puzzles are solved each day in newspapers, magazines, books and online as well as on smartphones and tablets across the world. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.conceptispuzzles.com/index.aspx?uri=info/doc/220

About

TURN.

Features
Read full description

"Tap and turn left" that's all, but my brain burns. [TURn. ] is an avoidance action game that anyone can play quickly with simple operation. [How to play] Just tap Keep avoiding the approaching objects! Score bonus for "near miss" that graps the last minute [Features] ・Anyone can understand it quickly with 1 tap operation ・As you level up, the appearance pattern increases and the difficulty increases. ・You can get high with the tension of a near miss and a bonus score ・1 play for a short time. Ideal for commuting, rest, and killing time ・"One more time" experience that does not stop updating the best score Only those who can react can survive. Now, let's update the highest score!!

Screenshots

Sudoku4 screens
TURN.4 screens

Verdict

The call

The clearest difference is in-app purchases: TURN. at none against Sudoku's 11. TURN. also leads on update cadence (fortnightly vs every 3 months). Sudoku's advantage is ads (none vs shown) and iOS requirement (15.6 vs 18.0). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sudoku sells 11 one-off in-app purchases. TURN. asks for nothing beyond the download.

UpkeepUpdate frequency

Sudoku ships an update every 3 months, TURN. fortnightly. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

Scorecard4 real differences · 6 level
Sudoku versus TURN.: the parameters behind the verdict, then further details
ParameterSudokuTURN.
PriceFreeFree
Rating4.8 (1.1K ratings) — better—
Positive reviews95.4% of reviews—
Number of ratings1.1K — better—
Update frequencyEvery 3 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.0
Further details — not scored
Size10 MB4 MB
Age rating4+4+
DeveloperConceptis Ltd.SHUNJI KUSAKA

Bugs and requests

Sudoku

Reported bugs

3 issues
  • Crashes or freezes
  • Incompatibility with older devices
  • Lack of color blind support

Requested features

6 requests
  • Dark mode option
  • More free/variety puzzle packs
  • Ability to discard used puzzles
  • Hint feature to help when stuck
  • Ability to highlight numbers in different colors
Show 1 more
  • Chain strategy explanation

TURN.

Not enough reviews yet to summarise bugs or requests.

In-app purchases

11 purchases

Sudoku

One-time11
  • Classic Easy 1$0.99
  • Diagonal Medium 1$1.99
  • Irregular Medium 1$1.99
Show 8 more
  • Classic Medium 1$1.99
  • Classic Hard 1$1.99
  • Diagonal Hard 1$1.99
  • Irregular Hard 1$1.99
  • OddEven Hard 1$1.99
  • OddEven Medium 1$1.99
  • Classic Devil 1$2.99
  • Mega Medium 1$3.99
None

TURN.

No in-app purchases

Questions

Is Sudoku free?
Sudoku is free to download, with in-app purchases available.
Is TURN. free?
TURN. is free to download, with no in-app purchases.
Do Sudoku or TURN. have ads?
TURN. shows ads; Sudoku does not.
Which is updated more often, Sudoku or TURN.?
Sudoku ships an update every 3 months, and TURN. fortnightly. Most recently, Sudoku was updated on October 29, 2026 and TURN. on October 26, 2026.

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