Futoshiki Mastermind
Logic puzzle with inequalities
Free · In‑App Purchases · Designed for iPad
One number, some signs… and hours of logic with Futoshiki!
Dive into Futoshiki, the Japanese logic puzzle where every grid hides a unique challenge. Fill the squares with numbers while following the rules of uniqueness, and pay attention to the greater and smaller signs that show the relation between two adjacent cells. There is only one possible solution – can you find it?
Futoshiki offers several ways to play. Progress through levels of increasing difficulty, take on the daily challenge with a brand-new puzzle every day, or enjoy the infinite mode with automatically generated grids.
Track your progress with integrated trophies and statistics. Save your games with iCloud and pick them up again on any of your devices.
The game is free with light advertising. A single purchase removes the ads and unlocks the Hard and Extreme levels. The purchase is universal (iPhone and iPad) and supports Family Sharing.
Futoshiki is available in more than 20 languages, including French, English, Spanish, Italian, German, Portuguese (Brazil), Japanese, and Korean.
It’s the perfect app for fans of Sudoku, Binairo and other logic puzzles. Will you master the inequalities?
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This update improves puzzle reliability, accessibility, and several details of the gameplay experience.
• Improved puzzle generation: every puzzle now has a unique solution, while inequalities remain at the heart of the reasoning.
• Timer fix: it no longer starts automatically before your first move.
• More accurate record detection: “New Record” no longer appears when you simply match your best time.
• iCloud purchase restoration has been fixed.
• VoiceOver has been improved on the home screen and when announcing inequalities.
• Reduced battery usage during a game.
• Various fixes and improvements.
Thanks for playing Futoshiki!
The developer, Robin Dufour, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Robin Dufour
- Size
- 17.5 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 22 more
- English, Arabic, Croatian, Czech, Danish, Dutch, Finnish, French, German, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Romanian, Spanish, Swedish, Thai, Turkish, Vietnamese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Futoshiki Premium $1.99
- Copyright
- © 2025-2026 Robin Dufour
