Comparison

Smart Sudoku vs Memory Game Retro Puzzle

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

Head to head
About

Smart Sudoku

This app offers advanced Sudoku solving assistance by identifying complex patterns and providing professional tips to eliminate candidates. It features a unique scoring system based on solution efficiency and allows for quick manual puzzle entry and import.

Highlights
  • Powerful hint system for solving strategies
  • Fast manual puzzle entry
  • Simultaneous multiple square handling
  • Show/hide candidates
  • Innovative efficiency-based scoring
  • Import puzzles from text and internet
  • Unlimited undo/redo
Features
Read full description

Are you familiar with terms like "X-Wing", "2-String Kite", or "Locked Candidates"? If yes, Smart Sudoku is for you. If not, even more so. Unlike most Sudoku apps, Smart Sudoku helps you solve tough puzzles by not simply revealing cell solutions, but by giving you professional tips. It tells you what patterns to look for in order to eliminate candidates. Smart Sudokus' unique scoring system ranks your solution not by the time you spent, but by how efficiently you solved the puzzle. Smart Sudoku comes with hundreds of challenging puzzles built-in. Copying a puzzle from a newspaper is a breeze – think of typing in a few phone numbers. "Excellent. Very simple to enter puzzles from the newspaper. Candidate numbers are displayed, allowing solutions to really tough puzzles to be solved without the laborious job of setting up candidates." (UK user) Features: • Powerful hint system based on the most popular solving strategies • Very fast manual puzzle entry method (typically 40 seconds or less) • Multiple squares may be handled simultaneously • Show or hide candidates anytime while solving the puzzle • Innovative scoring, based on efficiency of solving instead of time spent • Copy/paste puzzles in standard text format, incl. "HoDoKu Library Format" and "Simple Sudoku Format" • Import puzzles from the Internet • Share partially or fully solved puzzles via e-mail • 509 puzzles built-in, from easy to almost unsolvable • Unlimited undo/redo • Built-in user's manual • Landscape mode (iPad, Mac, Vision Pro) Hints Learn how to eliminate candidates by finding standard patterns. Let Smart Sudoku tell you what pattern to look for next. Still stuck? Smart Sudoku can even show you the squares and numbers involved. The affected squares are selected automatically, so eliminating candidates is a snap. Patterns handled by Smart Sudoku include: • Naked and Hidden Singles, Pairs, Triples, Quads, and Quintuples • Locked Candidates Type 1 and 2 • X-Wing • XY-Wing • XYZ-Wing • W-Wing • Skyscraper • 2-String Kite • Swordfish • Jellyfish • Empty Rectangle • Unique Rectangle Type 1 and 2 Input checking After copying a printed puzzle, Smart Sudoku will tell you whether the puzzle has a unique solution or not (usually caused by a typo or missing number.) Efficient solving Smart Sudoku helps you solve Sudokus in a professional way. Never add candidates, only remove them, even from multiple squares in one step. Should you ever get stuck (and no hints are available), let Smart Sudoku solve any square you wish. Or all squares for a given number. Or even the entire puzzle. Novel scoring method Unlike many Sudoku apps, Smart Sudoku rates your efficiency in solving a puzzle, not how quickly you do it. Solve one square at a time and your score will remain at zero. Solve as many squares as possible for a given number simultaneously and watch the progress bar grow. To get the maximum of 1000 points requires you to finish each number in a single step. The current score is shown in the title. Share puzzles Send an e-mail of a puzzle at any stage to your friends. If partially or fully solved, they'll also get the original puzzle. And, of course, they'll see your score, even a message about your making use of candidates. Recipients may paste the puzzle into their own copy of Smart Sudoku. Puzzles from the Internet Smart Sudoku supports the well-established text format for Sudokus (a string of 81 digits and decimal points), as well as export formats used by programs like HoDoKu and Simple Sudoku, giving you access to thousands of puzzles available on the Internet. Just download the text strings and paste them into Smart Sudoku.

About

Memory Game Retro Puzzle

Test your memory by repeating increasingly complex sequences of lights and sounds. Choose from classic, reverse, or random modes, and customize game speed, board size, and sound effects. Compete with others globally via leaderboards.

Highlights
  • 3 Game Modes (Classic, Reverse, Random)
  • 2x2 or 3x3 board options
  • Adjustable game speed
  • Customizable sound effects
  • Game Center leaderboards
  • VoiceOver accessibility
Features
Read full description

The game challenges you to repeat sequences of flashing lights and sounds. The difficulty will increase with each new level. The game will add new sequences that you must memorize and repeat in the same order, until your memory allows it. It has three game modes: Classic - Repeat the sequence in the same order Reverse - Repeat the sequence in reverse order Random - The sequence changes with each level Fully configurable, you can adjust the game speed, select the starting level, choose between a 2x2 or 3x3 board, and toggle sound effects on or off. Compare your score with friends and players from around the world using the built-in Game Center leaderboards. If you reach level 30, you are a genius! :) MAIN FEATURES • 3 Game Modes (Classic, Reverse, Random) • Play on a 2x2 or 3x3 board • Start at the level you want • 4 game speeds (Low, Normal, High, Extreme) • Choose between Original or Piano sound effects • Turn sound effects On or Off • Compare your scores with friends or players worldwide using Game Center • Save your high scores on your device • VoiceOver accessibility support • Universal App, full native support for iPhone and iPad

Screenshots

Smart Sudoku4 screens
Memory Game Retro Puzzle4 screens

Verdict

The call

The clearest difference is rating: Smart Sudoku at 5.0 against Memory Game Retro Puzzle's 4.4. Smart Sudoku also leads on iOS requirement (12.0 vs 15.0). Memory Game Retro Puzzle's advantage is review sentiment (100% vs 60%) and monetization model (free vs paid). On price, ads, in-app purchases 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

Smart Sudoku costs $0.99 and Memory Game Retro Puzzle $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Smart Sudoku holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Memory Game Retro Puzzle has 163 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 60% of Smart Sudoku's written reviews are positive against 100% of Memory Game Retro Puzzle's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Smart Sudoku ships an update every 9 months, Memory Game Retro Puzzle every 3 months. Both last shipped on November 10, 2026.

Scorecard6 real differences · 4 level
Smart Sudoku versus Memory Game Retro Puzzle: the parameters behind the verdict, then further details
ParameterSmart SudokuMemory Game Retro Puzzle
Price$0.99$0.99
Rating5.0 (3 ratings) — better4.4 (163 ratings)
Positive reviews60.0% of reviews100.0% of reviews — better
Number of ratings3163 — better
Update frequencyEvery 9 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size11 MB8 MB
Age rating4+4+
DeveloperCuVee SoftwareSergio Licea

Customer experience

Smart Sudoku

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive60.0%
Neutral20.0%
Negative20.0%

Memory Game Retro Puzzle

All ratings163 ratings
Positive85.9%
Neutral8.0%
Negative6.1%
Written reviews17 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Smart Sudoku

No in-app purchases

None

Memory Game Retro Puzzle

No in-app purchases

Questions

Is Smart Sudoku free?
Smart Sudoku costs $0.99, with no in-app purchases.
Is Memory Game Retro Puzzle free?
Memory Game Retro Puzzle costs $0.99, with no in-app purchases.
Which has better reviews, Smart Sudoku or Memory Game Retro Puzzle?
Smart Sudoku is rated higher. Smart Sudoku averages 5.0 out of 5 from 3 ratings, while Memory Game Retro Puzzle averages 4.4 from 163 ratings.
Do Smart Sudoku or Memory Game Retro Puzzle have ads?
Neither Smart Sudoku nor Memory Game Retro Puzzle shows ads.
Which is updated more often, Smart Sudoku or Memory Game Retro Puzzle?
Smart Sudoku ships an update every 9 months, and Memory Game Retro Puzzle every 3 months. Most recently, Smart Sudoku was updated on November 10, 2026 and Memory Game Retro Puzzle on November 10, 2026.

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