Loops: Slitherlink Puzzles
Logic puzzles, beautifully.
Free · In‑App Purchases
A new logic puzzle every day. Beautifully made. No ads, ever.
Loops is a calm, premium puzzle game built around Slitherlink — the loop logic puzzle from Japan, beloved by puzzle fans for over thirty years and now reimagined for iPhone and iPad.
The rules are simple. The grid hides one perfect loop. The numbers tell you how many of their four sides belong to it. Connect the dots, follow the clues, and find the only path that works.
Every puzzle has exactly one solution. No guessing. No luck. Just clean, satisfying deduction — and that small, perfect "click" when the loop closes.
TRAIN YOUR BRAIN, ONE LOOP AT A TIME
Loops is a logic workout disguised as a beautiful little app. Solving it trains pattern recognition, working memory, spatial reasoning, and patience — the same mental muscles you flex with sudoku, crosswords, and chess puzzles. Ten quiet minutes a day is enough to feel sharper.
WHAT MAKES LOOPS DIFFERENT
• A new puzzle every day, free forever — hand-curated, never random.
• Five difficulty tiers — from gentle five-minute warm-ups to Master puzzles that take a week.
• Hints that teach — instead of revealing the answer, Loops explains the technique you missed.
• Built like a real app — typography, haptics, sound, and motion crafted for focus.
• Zero distractions — no ads, no pop-ups, no notifications begging you to come back.
• Truly offline — play anywhere, no account required, no tracking.
PERFECT IF YOU LOVE
Sudoku · Wordle · daily logic puzzles · nonograms (Picross) · crosswords · Knotwords · Mahjong · Mini Metro · Monument Valley · or simply ten focused minutes a day.
Never tried a loop puzzle before? Loops is built to teach you. The three-minute onboarding has no walls of text and no tutorials to skip — you'll solve your first puzzle by the end of it, and your brain will thank you.
FREE FOREVER
• A new daily puzzle every day, with Easy and Medium difficulties fully unlocked.
• Five generated puzzles per day to keep you sharp.
• Pencil marks, unlimited undo, and a mistake checker — always free.
• Streak tracking, full statistics, and iCloud sync across all your devices.
• Beautiful dark mode and accessibility-grade contrast.
UNLOCK EVERYTHING — ONCE
A single one-time purchase unlocks:
• Every difficulty: Hard, Expert, and Master.
• Unlimited generated puzzles. Never run out.
• The full daily archive — every puzzle since launch.
• All themes, including the hand-drawn Czech Folk theme.
• Unlimited hints and lifetime mastery stats.
One payment. Yours forever. No subscriptions, no ads, no dark patterns.
FROM THE NIKOLI TRADITION
Slitherlink — also called Fences, Takegaki, or Loop the Loop — was created by the legendary Nikoli puzzle house in Japan in 1989. Loops carries that tradition forward with the craft of a modern iOS app.
MADE WITH CARE BY ONE INDEPENDENT CZECH DEVELOPER
No team. No ad networks. No data harvesting. Just one developer trying to make the puzzle app he always wanted to play.
Buy once, own forever, like apps used to be.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Our first big update — thank you for being here in the early days.
• Triangle puzzles — a brand new shape to solve
• Custom pen color — pick from six theme-aware shades
• Daily streak counter on the home screen
Plus dozens of polish fixes from your feedback.
The developer, DAVID GREBEN, 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:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- DAVID GREBEN
- Size
- 28.8 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later.
- iPhone
- Languages
English and 8 more
- English, Czech, French, German, Japanese, Polish, Spanish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Loops Premium $9.99
- Loops Premium (intro) $5.99
- Copyright
- © 2026 David Greben