Comparison

One Sudoku vs HexThrees

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

Head to head
About

One Sudoku

This app offers a vast collection of Sudoku puzzles with 11 unique types and adjustable difficulty. Engage in special events, compare scores globally, and unlock achievements. A premium club membership provides offline play and access to all puzzle variations without ads.

Highlights
  • 11 Sudoku puzzle types
  • Selectable difficulty levels
  • Special themed events
  • Global player comparisons
  • Unlockable achievements
  • Offline play with club membership
Features
Read full description

One Sudoku is the ultimate Sudoku app for your device. It features 11 varieties of Sudoku puzzle types in different sizes* with selectable difficulty levels. Thanks to different input methods, you can solve Sudokus the way it feels best for you. Special events that take place over the course of a year unlock new, exciting puzzle challenges. * All Sudokus featured in this app are 100 % unique - they are created exclusively for One Sudoku * One Sudoku includes an infinite number of Sudokus so the fun will never end * Compare your puzzle-solving skills with other players from all over the world * Unlock achievements * Themed Sudoku events The following puzzles types are included: * Classic (4x4, 9x9, 16x16) * Chaos (7x7 to 12x12) * Stair Steps * Mathdoku (3x3 to 6x6) * Window Club members also get access to: * Jigsaw (7x7, 9x9, 11x11) * Kropki (4x4 and 9x9) * Even / Odd * X-Sudoku * Comparison * Killer Play as many Sudokus as you want. Or join the „One Sudoku Club“ and unlock offline games, all puzzle types, and all difficulties without any ads. Download One Sudoku today - unlimited Sudoku solving fun awaits. *) Note: sizes from 10x10 and above are only available on devices with a larger screen (i.E. iPads). Terms of Use: https://onesudoku.app/terms

About

HexThrees

A relaxing puzzle game where you swipe tiles to merge them based on Fibonacci and power-of-two rules. Expand your game field for endless play and enjoy satisfying haptic feedback on compatible devices.

Highlights
  • Swipe to move tiles
  • Merge tiles by Fibonacci and power-of-two rules
  • Expandable game field for endless play
  • Satisfying haptic feedback
  • Relaxing gameplay
Features
Read full description

Swipe. Merge. Get bonus. Relax. Easy mind puzzle. Swipe to move tiles, merge them by basic rules, collect bonuses and avoid locks. Expandable game field, which makes process nearly endless! Perfect to distract your mind or keep your hands busy while listening to music or podcast. If your device equipped with haptic engine, you can feel realistic movement of every tile, making gameplay a unique satisfying experience. Simple, but challenging rules: - new cells combined by Fibonacci numbers - once cell reach level 8, use power of two! Easy to learn, easy to master. Just keep swiping!

Screenshots

One Sudoku4 screens
HexThrees3 screens

Verdict

The call

The clearest difference is in-app purchases: HexThrees at none against One Sudoku's 3. HexThrees also leads on ads (none vs shown). On price, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. One Sudoku sells 3 in-app purchases, starting at $2.49 per month. HexThrees asks for nothing beyond the download.

UpkeepUpdate frequency

One Sudoku ships an update every 3 months, HexThrees every 5 months. The most recent releases landed on September 6, 2026 and September 9, 2026 respectively.

Scorecard3 real differences · 7 level
One Sudoku versus HexThrees: the parameters behind the verdict, then further details
ParameterOne SudokuHexThrees
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings3 — better—
Update frequencyEvery 3 months — betterEvery 5 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size31 MB1 MB
Age rating4+4+
DeveloperCornelius BehrendIlja Stepanow

Customer experience

One Sudoku

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

HexThrees

Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

One Sudoku

Subscriptions3
  • One Sudoku Club: Monthly$2.491 Month
  • One Sudoku Club Promotion$6.993 Months
  • One Sudoku Club: Yearly$22.991 Year
None

HexThrees

No in-app purchases

Questions

Is One Sudoku free?
One Sudoku is free to download, with in-app purchases available.
Is HexThrees free?
HexThrees is free to download, with no in-app purchases.
Do One Sudoku or HexThrees have ads?
One Sudoku shows ads; HexThrees does not.
Which is updated more often, One Sudoku or HexThrees?
One Sudoku ships an update every 3 months, and HexThrees every 5 months. Most recently, One Sudoku was updated on September 6, 2026 and HexThrees on September 9, 2026.

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