Rulo: Logic Puzzle Daily
Guess the hidden rule
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Three boards of shapes. One secret rule. Can you find it?
Rulo is a daily deduction puzzle. Every board you see follows a hidden rule — maybe "more red than blue", maybe "exactly one shape touches the edge", maybe something trickier. Your job is to work out what it is.
BUILD AN EXPERIMENT
Place circles, squares, triangles and diamonds on a 4×4 board and check it. The game stamps it: fits or doesn't fit. Every check is saved, so you can compare, copy and tweak your boards until the pattern clicks.
SAY "I KNOW!"
When you're sure, prove it: sort five new boards into "fits" and "doesn't fit". Get one wrong and Rulo shows you exactly which board broke your theory.
A NEW RULE EVERY DAY
The rule of the day is the same for everyone. Keep your streak going, compare your score on the Game Center leaderboard and share a spoiler-free result card with friends.
LEARN AS YOU PLAY
Twenty short lessons teach every trick: colors, counts, edges, corners, symmetry and combined rules.
MADE FOR EVERYONE
• Patterns on shapes, so color is never the only clue
• Full VoiceOver support and Dynamic Type
• Light and dark themes
• Home Screen widget and a Live Activity while you solve
• No account, no ads, works offline
RULO PRO
The daily rule and all lessons are free. A one-time Rulo Pro purchase unlocks the full archive of past daily rules, every rule pack, duels with friends and extra themes. Rule packs can also be bought separately. No subscriptions.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Sharing your result now links straight to Rulo on the App Store, so friends can join today's rule in one tap. Small fixes and polish.
The developer, Yevhenii Bruchkovskyi, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yevhenii Bruchkovskyi
- Size
- 1.6 MB
- Category
- Puzzle
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
English and 2 more
- English, Russian, Ukrainian
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Space Pack $1.99
- Tricky Pack $1.99
- Numbers Pack $1.99
- Rulo Pro $4.99
- Copyright
- © 2026 Yevhenii Bruchkovskyi
