Comparison

Futoshiki 101 vs Shikaku

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

Head to head
About

Futoshiki 101

Challenge your logic with over 100 Sudoku-style number puzzles. Arrange numbers 1-5 in rows and columns while adhering to greater-than/less-than constraints between adjacent numbers. Features pencil mode for notes and mistake highlighting.

Highlights
  • 101 increasingly difficult puzzles
  • Sudoku-style number arrangement
  • Greater-than/less-than constraints
  • Pencil mode for notes
  • Mistake highlighting
  • 5 difficulty levels
Features
Read full description

Prepare yourself for Futoshiki fever as you make your way through 101 increasingly difficult Sudoku-style number puzzles in one great app. The aim of the game is simple: drag and drop the numbers onto the grid so that each row and column contains the numbers 1 to 5, and numbers either side of a less-than and greater-than symbol are bigger or smaller than their neighbour, as indicated. Easy, right? You can plan ahead using pencil mode to make notes, and its easy to spot mistakes because the app will highlight them for you. So, with 5 difficultly levels from Tranquil to Terrifying, only one question remains: can you solve them all? Download Futoshiki 101 today!

About

Shikaku

Engage in a minimalist logic puzzle game where you divide a grid into rectangular pieces. Each piece must contain a number representing its total area. Enjoy daily challenges, endless modes, and customizable themes.

Highlights
  • Grid division logic puzzles
  • Daily puzzle chapters
  • Infinite puzzle generation
  • Customizable themes
  • XP system for mastery
  • Ad-free experience
Features
Read full description

Master the Geometry of Logic. Step into the world of Shikaku (also known as Rectangles), a classic Japanese logic puzzle reimagined for the modern era. Shikaku is a minimalist experience designed for those who find beauty in structure and peace in problem-solving. THE GOAL Divide the grid into rectangular and square pieces such that each piece contains exactly one number. That number must represent the total area (the number of cells) of that rectangle. It’s simple to learn, but mastery requires a deep understanding of logical geometry. WHY PLAY SHIKAKU? • Handcrafted Minimalism: A clean, distraction-free interface that lets you focus entirely on the puzzle at hand. • Daily Chapters: Every day brings a new "Chapter" with three stages of escalating difficulty. Start your morning with a light challenge and end your day with a masterclass in logic. • Infinite Endless Mode: Never run out of puzzles. Generate grids of various sizes—from quick 4x4 warm-ups to daunting large-scale grids. • Personalize Your Experience: Express yourself with over 16 vibrant themes, including Tokyo Neon, Sakura, Botanical, and Midnight. • Mastery XP System: Prove your skill. Turn off assistive features to earn 1.5x XP and climb the ranks of logic masters. • Zero Distractions: No ads. No interruptions. Just you and the grid. Whether you’re a Sudoku veteran or a casual puzzle lover, Shikaku offers a meditative yet mentally stimulating escape. Handcrafted with pride by De Groot Studio.

Screenshots

Futoshiki 1012 screens
Shikaku4 screens

Verdict

The call

The clearest difference is review sentiment: Shikaku at 76% against Futoshiki 101's 0%. Shikaku also leads on rating (4.4 vs 1.0) and in-app purchases (none vs 1). Futoshiki 101's advantage is iOS requirement (9.0 vs 15.6). On price, update cadence, ads 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. Futoshiki 101 sells 1 one-off in-app purchase. Shikaku asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Shikaku holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Shikaku has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Futoshiki 101's written reviews are positive against 76% of Shikaku's.

UpkeepUpdate frequency

Futoshiki 101 ships an update monthly, Shikaku every 3 weeks. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.

Scorecard6 real differences · 4 level
Futoshiki 101 versus Shikaku: the parameters behind the verdict, then further details
ParameterFutoshiki 101Shikaku
PriceFreeFree
Rating1.0 (3 ratings)4.4 (16 ratings) — better
Positive reviews0.0% of reviews76.5% of reviews — better
Number of ratings316 — better
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS9.0 — better15.6
Further details — not scored
Size8 MB29 MB
Age rating4+4+
DeveloperMesmotronicBRIDGE DIGITAL EUROPE LIMITED

Customer experience

Futoshiki 101

All ratings3 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

Shikaku

All ratings14 ratings
Positive85.7%
Neutral14.3%
Negative0.0%
Written reviews17 reviews
Positive76.5%
Neutral23.5%
Negative0.0%

In-app purchases

1 purchases

Futoshiki 101

One-time1
  • Remove adverts$1.99
None

Shikaku

No in-app purchases

Questions

Is Futoshiki 101 free?
Futoshiki 101 is free to download, with in-app purchases available.
Is Shikaku free?
Shikaku is free to download, with no in-app purchases.
Which has better reviews, Futoshiki 101 or Shikaku?
Shikaku is rated higher. Futoshiki 101 averages 1.0 out of 5 from 3 ratings, while Shikaku averages 4.4 from 16 ratings.
Do Futoshiki 101 or Shikaku have ads?
Neither Futoshiki 101 nor Shikaku shows ads.
Which is updated more often, Futoshiki 101 or Shikaku?
Futoshiki 101 ships an update monthly, and Shikaku every 3 weeks. Most recently, Futoshiki 101 was updated on October 14, 2026 and Shikaku on October 21, 2026.

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