Supported Features
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Larger Text
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Dark Interface
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Differentiate Without Color Alone
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Sufficient Contrast
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Reduced Motion
loopr: Yajilin Logic Puzzles
Draw the Loop. Solve the Grid.
$3.99 · Designed for iPad
Also Included In
Love loop puzzles? Yajilin combines shading and path-drawing in one elegant grid. Daily challenges, hundreds of handcrafted puzzles, no ads.
Shade cells. Draw a loop. Solve it with pure logic.
loopr is a loop puzzle where arrow clues tell you how many cells to shade, then you draw a single continuous path through everything that's left. If you love Slitherlink, Masyu, or any Nikoli puzzle, this is your next obsession.
Based on Yajilin — a classic Japanese grid puzzle originally published by Nikoli and featured in the World Puzzle Championship. Every puzzle has exactly one solution, discoverable through pure logic. No guessing required.
DAILY CHALLENGES
A fresh puzzle every day at three difficulty levels. Complete all three to keep your streak alive.
HUNDREDS OF PUZZLES
Easy, Medium, and Hard. Every puzzle is hand-crafted and solvable through logic alone.
THE GAUNTLET
A massive weekly puzzle that pushes your logic to the limit. One grid. One week. Good luck.
SMART HINTS
Stuck? Tap an arrow clue to reveal what should be there. No spoilers, no paywall.
STATS & STREAKS
Track your best times, daily streaks, and personal records. Badges and milestones mark your progress as you improve.
LEARN IN UNDER A MINUTE
Interactive tutorial and strategy guide get you solving quickly. If you've played Slitherlink or any loop puzzle, you'll pick this up fast.
ONE PURCHASE. NO ADS.
No ads between puzzles. No subscription. Pay once, play forever.
Clean, minimal design with a dark theme. Accessibility options including adjustable text size, high contrast mode, and reduced animations.
Perfect for fans of Slitherlink, Masyu, Sudoku, Nonograms, and other Nikoli logic puzzles.
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
- Smoother line drawing on fast swipes
- Improved animation performance and stability
- General bug fixes and polish
The developer, Leon Cross, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Leon Cross
- Size
- 46.3 MB
- Category
- Puzzle
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Leon Cross
