Comparison

SudokuSmart vs Odd One

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

Head to head
About

SudokuSmart

Engage with hundreds of number puzzles, master advanced solving techniques, and challenge friends on a global leaderboard. Offers daily, weekly, and monthly tournaments with prizes, plus a helpful step-by-step guide for all skill levels.

Highlights
  • Daily and weekly sudokus with global leaderboard
  • Monthly tournaments with prizes
  • Step-by-step solving method helper
  • 750+ permanent levels of all difficulties
  • Scan sudokus from photos
  • Customization options and sandbox tools
Features
Read full description

SudokuSmart is the perfect companion for anyone that enjoys number puzzles. Play hundreds of grids, learn the most advanced sudoku methods, and compete with your friends - all for free and without intrusive advertisements. Tailored to all skill levels, there is so much SudokuSmart has to offer: - Daily and Weekly sudokus connected to a global leaderboard -Monthly tournaments with prizes - Helper that provides step-by-step visual assistance on numerous solving methods - 750+ permanent levels of all difficulties, including Alternating-Inference-Chains - Exhaustive settings and customisation options - Sandbox with powerful tools (solving path, auto-solve, candidates, difficulty rating) Possibilities are endless: - Scan a sudoku from Photos and start playing in seconds - Send notification reminders to your friends to maintain their streaks’ - Unlock profile pictures and completion animations - Highlight specific candidates different colours The best part? SudokuSmart will keep improving, fueled by the feedback of players. Start playing now, and get your say in the next big update.

About

Odd One

Test your logic and pattern recognition skills by identifying the unique symbol in a grid. Choose from multiple game modes, including classic, arcade, endless, and daily challenges. Enjoy a calm, ad-free experience with accessibility features and global leaderboards.

Highlights
  • Identify unique symbols
  • Multiple game modes
  • Logic and pattern challenges
  • Ad-free and no tracking
  • Accessibility features
  • Global leaderboards
Features
Read full description

A grid of symbols. One breaks the hidden rule - colour, shape, size, count or pattern. Tap exactly that one. That is all you need to know, and that is exactly why it is so much fun. FOUR MODES - Classic: 300 levels, no clock, pure logic. From level 151 the Extreme World adds patterns as a fifth dimension. - Arcade: a 60-second time bank. Right answers earn time, wrong ones cost it. - Endless: three lives, no time pressure. Four tiers up to Extreme. - Daily: five puzzles a day, the same for everyone worldwide. One chance. ON YOUR HOME SCREEN - A widget with your daily status and a playable mini puzzle - in three sizes FAIR AND CALM - Completely free: no ads, no tracking, no account, no paywall - A voluntary tip jar is the only source of income - it unlocks nothing - Calm piano music, light and dark design, alternate app icons - Colour assist for colour-blind players, full VoiceOver support - Game Center: leaderboards and 13 achievements, iCloud sync - Fully localised in nine languages (EN, DE, FR, IT, ES, PT, JA, KO, ZH) Odd One is the first game from earls studio, Munich.

Screenshots

SudokuSmart4 screens
Odd One4 screens

Verdict

The call

The clearest difference is monetization model: Odd One at free against SudokuSmart's free with in-app purchases. SudokuSmart's advantage is review sentiment (100% vs 92%). On price, update cadence, ads and in-app purchases 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. SudokuSmart sells 1 one-off in-app purchase and Odd One sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SudokuSmart ships an update every 2 weeks, Odd One weekly. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 8 level
SudokuSmart versus Odd One: the parameters behind the verdict, then further details
ParameterSudokuSmartOdd One
PriceFreeFree
Rating4.7 (20 ratings) — better—
Positive reviews100.0% of reviews — better91.7% of reviews
Number of ratings20 — better—
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPad — better
Requires iOS18.017.0 — better
Further details — not scored
Size39 MB23 MB
Age rating4+4+
DeveloperFelix JohnsonLucas Hesseldieck

Customer experience

SudokuSmart

All ratings20 ratings
Positive95.0%
Neutral5.0%
Negative0.0%
Written reviews13 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Odd One

Written reviews12 reviews
Positive91.7%
Neutral8.3%
Negative0.0%

In-app purchases

1 purchases

SudokuSmart

One-time1
  • SudokuSmart Pro$3.99
4 purchases

Odd One

One-time4
  • Small tip$0.99
  • Coffee tip$2.99
  • Custom Tip$4.00
Show 1 more
  • Generous tip$8.99

Questions

Is SudokuSmart free?
SudokuSmart is free to download, with in-app purchases available.
Is Odd One free?
Odd One is free to download, with in-app purchases available.
Do SudokuSmart or Odd One have ads?
Neither SudokuSmart nor Odd One shows ads.
Which is updated more often, SudokuSmart or Odd One?
SudokuSmart ships an update every 2 weeks, and Odd One weekly. Most recently, SudokuSmart was updated on November 8, 2026 and Odd One on November 10, 2026.

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